8251021440057 has 16 divisors (see below), whose sum is σ = 12325850212032. Its totient is φ = 4865467187520.

The previous prime is 8251021440037. The next prime is 8251021440073. The reversal of 8251021440057 is 7500441201528.

It is not a de Polignac number, because 8251021440057 - 2¹⁸ = 8251021177913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8251021439997 and 8251021440024.

It is not an unprimeable number, because it can be changed into a prime (8251021440037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3378795438 + ... + 3378797879.

It is an arithmetic number, because the mean of its divisors is an integer number (770365638252).

Almost surely, 2^{8251021440057} is an apocalyptic number.

It is an amenable number.

8251021440057 is a deficient number, since it is larger than the sum of its proper divisors (4074828771975).

8251021440057 is a wasteful number, since it uses less digits than its factorization.

8251021440057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6757593368.

The product of its (nonzero) digits is 89600, while the sum is 39.

The spelling of 8251021440057 in words is "eight trillion, two hundred fifty-one billion, twenty-one million, four hundred forty thousand, fifty-seven".