215700555057 has 16 divisors (see below), whose sum is σ = 309757979328. Its totient is φ = 132724186560.

The previous prime is 215700555041. The next prime is 215700555061. The reversal of 215700555057 is 750555007512.

It is not a de Polignac number, because 215700555057 - 2⁴ = 215700555041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215700550057) 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, 59718 + ... + 659520.

It is an arithmetic number, because the mean of its divisors is an integer number (19359873708).

Almost surely, 2^215700555057 is an apocalyptic number.

It is an amenable number.

215700555057 is a deficient number, since it is larger than the sum of its proper divisors (94057424271).

215700555057 is a wasteful number, since it uses less digits than its factorization.

215700555057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609040.

The product of its (nonzero) digits is 306250, while the sum is 42.

The spelling of 215700555057 in words is "two hundred fifteen billion, seven hundred million, five hundred fifty-five thousand, fifty-seven".