21755601171336 has 32 divisors (see below), whose sum is σ = 55310850439200. Its totient is φ = 7128954055680.

The previous prime is 21755601171233. The next prime is 21755601171349. The reversal of 21755601171336 is 63317110655712.

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, 7682061145 + ... + 7682063976.

It is an arithmetic number, because the mean of its divisors is an integer number (1728464076225).

Almost surely, 2^{21755601171336} is an apocalyptic number.

It is an amenable number.

21755601171336 is an abundant number, since it is smaller than the sum of its proper divisors (33555249267864).

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

21755601171336 is a wasteful number, since it uses less digits than its factorization.

21755601171336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15364125189 (or 15364125185 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 48.

The spelling of 21755601171336 in words is "twenty-one trillion, seven hundred fifty-five billion, six hundred one million, one hundred seventy-one thousand, three hundred thirty-six".