257550600506021 has 8 divisors (see below), whose sum is σ = 266971063833600. Its totient is φ = 248199660893520.

The previous prime is 257550600505997. The next prime is 257550600506071. The reversal of 257550600506021 is 120605006055752.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257550600506021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257550600506071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17380921226 + ... + 17380936043.

It is an arithmetic number, because the mean of its divisors is an integer number (33371382979200).

Almost surely, 2^{257550600506021} is an apocalyptic number.

It is an amenable number.

257550600506021 is a deficient number, since it is larger than the sum of its proper divisors (9420463327579).

257550600506021 is a wasteful number, since it uses less digits than its factorization.

257550600506021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34761857539.

The product of its (nonzero) digits is 630000, while the sum is 44.

The spelling of 257550600506021 in words is "two hundred fifty-seven trillion, five hundred fifty billion, six hundred million, five hundred six thousand, twenty-one".