1515056555142 has 128 divisors (see below), whose sum is σ = 3661647897600. Its totient is φ = 461567780352.

The previous prime is 1515056555081. The next prime is 1515056555149. The reversal of 1515056555142 is 2415556505151.

1515056555142 is a `hidden beast` number, since 1 + 5 + 1 + 5 + 0 + 56 + 5 + 551 + 42 = 666.

It is a super-3 number, since 3×1515056555142³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1515056555149) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 80823823 + ... + 80842565.

It is an arithmetic number, because the mean of its divisors is an integer number (28606624200).

Almost surely, 2^{1515056555142} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1515056555142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1830823948800).

1515056555142 is an abundant number, since it is smaller than the sum of its proper divisors (2146591342458).

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

1515056555142 is a wasteful number, since it uses less digits than its factorization.

1515056555142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19899 (or 19893 counting only the distinct ones).

The product of its (nonzero) digits is 750000, while the sum is 45.

The spelling of 1515056555142 in words is "one trillion, five hundred fifteen billion, fifty-six million, five hundred fifty-five thousand, one hundred forty-two".