21173086377410 has 64 divisors (see below), whose sum is σ = 41640784819200. Its totient is φ = 7687360696320.

The previous prime is 21173086377409. The next prime is 21173086377497. The reversal of 21173086377410 is 1477368037112.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195762767 + ... + 195870893.

It is an arithmetic number, because the mean of its divisors is an integer number (650637262800).

Almost surely, 2^{21173086377410} is an apocalyptic number.

21173086377410 is a deficient number, since it is larger than the sum of its proper divisors (20467698441790).

21173086377410 is a wasteful number, since it uses less digits than its factorization.

21173086377410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110891.

The product of its (nonzero) digits is 1185408, while the sum is 50.

The spelling of 21173086377410 in words is "twenty-one trillion, one hundred seventy-three billion, eighty-six million, three hundred seventy-seven thousand, four hundred ten".