21470679996 has 24 divisors (see below), whose sum is σ = 50113386624. Its totient is φ = 7154731440.

The previous prime is 21470679983. The next prime is 21470680001. The reversal of 21470679996 is 69997607412.

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, 228600 + ... + 308543.

It is an arithmetic number, because the mean of its divisors is an integer number (2088057776).

Almost surely, 2^21470679996 is an apocalyptic number.

It is an amenable number.

21470679996 is an abundant number, since it is smaller than the sum of its proper divisors (28642706628).

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

21470679996 is a wasteful number, since it uses less digits than its factorization.

21470679996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540481 (or 540479 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 60.

The spelling of 21470679996 in words is "twenty-one billion, four hundred seventy million, six hundred seventy-nine thousand, nine hundred ninety-six".