21630322462 has 16 divisors (see below), whose sum is σ = 37103495040. Its totient is φ = 9264402648.

The previous prime is 21630322429. The next prime is 21630322477. The reversal of 21630322462 is 26422303612.

It is a congruent number.

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, 454488 + ... + 499819.

It is an arithmetic number, because the mean of its divisors is an integer number (2318968440).

Almost surely, 2^21630322462 is an apocalyptic number.

21630322462 is a deficient number, since it is larger than the sum of its proper divisors (15473172578).

21630322462 is a wasteful number, since it uses less digits than its factorization.

21630322462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955935.

The product of its (nonzero) digits is 20736, while the sum is 31.

The spelling of 21630322462 in words is "twenty-one billion, six hundred thirty million, three hundred twenty-two thousand, four hundred sixty-two".