21372257462 has 16 divisors (see below), whose sum is σ = 32162313600. Its totient is φ = 10651540800.

The previous prime is 21372257453. The next prime is 21372257509. The reversal of 21372257462 is 26475227312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810587 + ... + 836537.

It is an arithmetic number, because the mean of its divisors is an integer number (2010144600).

Almost surely, 2^21372257462 is an apocalyptic number.

21372257462 is a deficient number, since it is larger than the sum of its proper divisors (10790056138).

21372257462 is a wasteful number, since it uses less digits than its factorization.

21372257462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27271.

The product of its digits is 282240, while the sum is 41.

The spelling of 21372257462 in words is "twenty-one billion, three hundred seventy-two million, two hundred fifty-seven thousand, four hundred sixty-two".