21323155051135 has 48 divisors (see below), whose sum is σ = 29810661317856. Its totient is φ = 14599365107712.

The previous prime is 21323155051103. The next prime is 21323155051157. The reversal of 21323155051135 is 53115055132312.

It is a happy number.

It is not a de Polignac number, because 21323155051135 - 2⁵ = 21323155051103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21323155051094 and 21323155051103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 527349879 + ... + 527390311.

It is an arithmetic number, because the mean of its divisors is an integer number (621055444122).

Almost surely, 2^{21323155051135} is an apocalyptic number.

21323155051135 is a deficient number, since it is larger than the sum of its proper divisors (8487506266721).

21323155051135 is a wasteful number, since it uses less digits than its factorization.

21323155051135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43672 (or 43665 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 37.

The spelling of 21323155051135 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred fifty-five million, fifty-one thousand, one hundred thirty-five".