21437678000496 has 40 divisors (see below), whose sum is σ = 57167141338624. Its totient is φ = 6915379999680.

The previous prime is 21437678000461. The next prime is 21437678000507. The reversal of 21437678000496 is 69400087673412.

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, 7203519346 + ... + 7203522321.

Almost surely, 2^{21437678000496} is an apocalyptic number.

It is an amenable number.

21437678000496 is an abundant number, since it is smaller than the sum of its proper divisors (35729463338128).

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

21437678000496 is a wasteful number, since it uses less digits than its factorization.

21437678000496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14407041709 (or 14407041703 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 57.

The spelling of 21437678000496 in words is "twenty-one trillion, four hundred thirty-seven billion, six hundred seventy-eight million, four hundred ninety-six", and thus it is an aban number.