21601677007570 has 32 divisors (see below), whose sum is σ = 42435881462016. Its totient is φ = 7851813984000.

The previous prime is 21601677007567. The next prime is 21601677007579. The reversal of 21601677007570 is 7570077610612.

It is not an unprimeable number, because it can be changed into a prime (21601677007579) 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, 41506359 + ... + 42023578.

It is an arithmetic number, because the mean of its divisors is an integer number (1326121295688).

Almost surely, 2^{21601677007570} is an apocalyptic number.

21601677007570 is a deficient number, since it is larger than the sum of its proper divisors (20834204454446).

21601677007570 is a wasteful number, since it uses less digits than its factorization.

21601677007570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83532306.

The product of its (nonzero) digits is 864360, while the sum is 49.

The spelling of 21601677007570 in words is "twenty-one trillion, six hundred one billion, six hundred seventy-seven million, seven thousand, five hundred seventy".