2015623761057 has 8 divisors (see below), whose sum is σ = 2986109275680. Its totient is φ = 1343749174020.

The previous prime is 2015623761043. The next prime is 2015623761119. The reversal of 2015623761057 is 7501673265102.

It is a happy number.

2015623761057 is a `hidden beast` number, since 2 + 0 + 1 + 5 + 6 + 23 + 7 + 610 + 5 + 7 = 666.

It is not a de Polignac number, because 2015623761057 - 2⁶ = 2015623760993 is a prime.

It is a super-2 number, since 2×2015623761057² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2015623761007) 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 7 ways as a sum of consecutive naturals, for example, 37326365919 + ... + 37326365972.

It is an arithmetic number, because the mean of its divisors is an integer number (373263659460).

Almost surely, 2^{2015623761057} is an apocalyptic number.

2015623761057 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2015623761057 is a deficient number, since it is larger than the sum of its proper divisors (970485514623).

2015623761057 is an equidigital number, since it uses as much as digits as its factorization.

2015623761057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74652731900 (or 74652731894 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 2015623761057 in words is "two trillion, fifteen billion, six hundred twenty-three million, seven hundred sixty-one thousand, fifty-seven".