2015453311542 has 128 divisors (see below), whose sum is σ = 4970214743040. Its totient is φ = 600226848000.

The previous prime is 2015453311541. The next prime is 2015453311549. The reversal of 2015453311542 is 2451133545102.

2015453311542 is a `hidden beast` number, since 2 + 0 + 1 + 5 + 4 + 533 + 115 + 4 + 2 = 666.

It is a super-2 number, since 2×2015453311542² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2015453311497 and 2015453311506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015453311541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44291442 + ... + 44336922.

It is an arithmetic number, because the mean of its divisors is an integer number (38829802680).

Almost surely, 2^{2015453311542} is an apocalyptic number.

2015453311542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2015453311542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2485107371520).

2015453311542 is an abundant number, since it is smaller than the sum of its proper divisors (2954761431498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2015453311542 is a wasteful number, since it uses less digits than its factorization.

2015453311542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46787 (or 46781 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 2015453311542 its reverse (2451133545102), we get a palindrome (4466586856644).

The spelling of 2015453311542 in words is "two trillion, fifteen billion, four hundred fifty-three million, three hundred eleven thousand, five hundred forty-two".