21355930101160 has 16 divisors (see below), whose sum is σ = 48050842727700. Its totient is φ = 8542372040448.

The previous prime is 21355930101083. The next prime is 21355930101161. The reversal of 21355930101160 is 6110103955312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21297357388836 + 58572712324 = 4614906^2 + 242018^2 .

It is not an unprimeable number, because it can be changed into a prime (21355930101161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266949126225 + ... + 266949126304.

Almost surely, 2^{21355930101160} is an apocalyptic number.

21355930101160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21355930101160 is an abundant number, since it is smaller than the sum of its proper divisors (26694912626540).

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

21355930101160 is a wasteful number, since it uses less digits than its factorization.

21355930101160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533898252540 (or 533898252536 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 37.

The spelling of 21355930101160 in words is "twenty-one trillion, three hundred fifty-five billion, nine hundred thirty million, one hundred one thousand, one hundred sixty".