21575226710660 has 48 divisors (see below), whose sum is σ = 54826458470784. Its totient is φ = 6962089963008.

The previous prime is 21575226710657. The next prime is 21575226710669. The reversal of 21575226710660 is 6601762257512.

It is a junction number, because it is equal to n+sod(n) for n = 21575226710599 and 21575226710608.

It is not an unprimeable number, because it can be changed into a prime (21575226710669) 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, 4532608274 + ... + 4532613033.

It is an arithmetic number, because the mean of its divisors is an integer number (1142217884808).

Almost surely, 2^{21575226710660} is an apocalyptic number.

21575226710660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21575226710660 is an abundant number, since it is smaller than the sum of its proper divisors (33251231760124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21575226710660 is a wasteful number, since it uses less digits than its factorization.

21575226710660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9065221340 (or 9065221338 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 21575226710660 in words is "twenty-one trillion, five hundred seventy-five billion, two hundred twenty-six million, seven hundred ten thousand, six hundred sixty".