21612631034676 has 24 divisors (see below), whose sum is σ = 55013969906784. Its totient is φ = 6549282131680.

The previous prime is 21612631034651. The next prime is 21612631034677. The reversal of 21612631034676 is 67643013621612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21612631034677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81866026515 + ... + 81866026778.

It is an arithmetic number, because the mean of its divisors is an integer number (2292248746116).

Almost surely, 2^{21612631034676} is an apocalyptic number.

It is an amenable number.

21612631034676 is an abundant number, since it is smaller than the sum of its proper divisors (33401338872108).

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

21612631034676 is a wasteful number, since it uses less digits than its factorization.

21612631034676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163732053311 (or 163732053309 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 21612631034676 in words is "twenty-one trillion, six hundred twelve billion, six hundred thirty-one million, thirty-four thousand, six hundred seventy-six".