21880928570770 has 16 divisors (see below), whose sum is σ = 39400264166400. Its totient is φ = 8749128597424.

The previous prime is 21880928570737. The next prime is 21880928570789. The reversal of 21880928570770 is 7707582908812.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405325522 + ... + 405379501.

It is an arithmetic number, because the mean of its divisors is an integer number (2462516510400).

Almost surely, 2^{21880928570770} is an apocalyptic number.

21880928570770 is a deficient number, since it is larger than the sum of its proper divisors (17519335595630).

21880928570770 is a wasteful number, since it uses less digits than its factorization.

21880928570770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810707729.

The product of its (nonzero) digits is 31610880, while the sum is 64.

The spelling of 21880928570770 in words is "twenty-one trillion, eight hundred eighty billion, nine hundred twenty-eight million, five hundred seventy thousand, seven hundred seventy".