57021502257650 has 96 divisors (see below), whose sum is σ = 122062787481600. Its totient is φ = 19413303117120.

The previous prime is 57021502257571. The next prime is 57021502257653. The reversal of 57021502257650 is 5675220512075.

It is a junction number, because it is equal to n+sod(n) for n = 57021502257595 and 57021502257604.

It is not an unprimeable number, because it can be changed into a prime (57021502257653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34220147 + ... + 35847753.

It is an arithmetic number, because the mean of its divisors is an integer number (1271487369600).

Almost surely, 2^{57021502257650} is an apocalyptic number.

57021502257650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

57021502257650 is an abundant number, since it is smaller than the sum of its proper divisors (65041285223950).

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

57021502257650 is a wasteful number, since it uses less digits than its factorization.

57021502257650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628328 (or 1628323 counting only the distinct ones).

The product of its (nonzero) digits is 1470000, while the sum is 47.

The spelling of 57021502257650 in words is "fifty-seven trillion, twenty-one billion, five hundred two million, two hundred fifty-seven thousand, six hundred fifty".