21655601535332 has 12 divisors (see below), whose sum is σ = 38087741395200. Its totient is φ = 10773389708136.

The previous prime is 21655601535329. The next prime is 21655601535427. The reversal of 21655601535332 is 23353510655612.

It is a super-4 number, since 4×21655601535332⁴ (a number of 54 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13602763988 + ... + 13602765579.

It is an arithmetic number, because the mean of its divisors is an integer number (3173978449600).

Almost surely, 2^{21655601535332} is an apocalyptic number.

It is an amenable number.

21655601535332 is a deficient number, since it is larger than the sum of its proper divisors (16432139859868).

21655601535332 is a wasteful number, since it uses less digits than its factorization.

21655601535332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27205529770 (or 27205529768 counting only the distinct ones).

The product of its (nonzero) digits is 2430000, while the sum is 47.

The spelling of 21655601535332 in words is "twenty-one trillion, six hundred fifty-five billion, six hundred one million, five hundred thirty-five thousand, three hundred thirty-two".