2015313451384 has 8 divisors (see below), whose sum is σ = 3778712721360. Its totient is φ = 1007656725688.

The previous prime is 2015313451363. The next prime is 2015313451451. The reversal of 2015313451384 is 4831543135102.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2015313451384² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125957090704 + ... + 125957090719.

It is an arithmetic number, because the mean of its divisors is an integer number (472339090170).

Almost surely, 2^{2015313451384} is an apocalyptic number.

It is an amenable number.

2015313451384 is a deficient number, since it is larger than the sum of its proper divisors (1763399269976).

2015313451384 is a wasteful number, since it uses less digits than its factorization.

2015313451384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251914181429 (or 251914181425 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

Adding to 2015313451384 its reverse (4831543135102), we get a palindrome (6846856586486).

The spelling of 2015313451384 in words is "two trillion, fifteen billion, three hundred thirteen million, four hundred fifty-one thousand, three hundred eighty-four".