8135887021057 has 4 divisors (see below), whose sum is σ = 8166821952960. Its totient is φ = 8104952089156.

The previous prime is 8135887021039. The next prime is 8135887021063. The reversal of 8135887021057 is 7501207885318.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8135887021057 - 2²⁷ = 8135752803329 is a prime.

It is a super-2 number, since 2×8135887021057² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8135887020989 and 8135887021007.

It is not an unprimeable number, because it can be changed into a prime (8135887027057) 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 3 ways as a sum of consecutive naturals, for example, 15467465557 + ... + 15467466082.

It is an arithmetic number, because the mean of its divisors is an integer number (2041705488240).

Almost surely, 2^{8135887021057} is an apocalyptic number.

It is an amenable number.

8135887021057 is a deficient number, since it is larger than the sum of its proper divisors (30934931903).

8135887021057 is a wasteful number, since it uses less digits than its factorization.

8135887021057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30934931902.

The product of its (nonzero) digits is 3763200, while the sum is 55.

The spelling of 8135887021057 in words is "eight trillion, one hundred thirty-five billion, eight hundred eighty-seven million, twenty-one thousand, fifty-seven".