21347464410 has 32 divisors (see below), whose sum is σ = 56926572480. Its totient is φ = 5692657104.

The previous prime is 21347464399. The next prime is 21347464433. The reversal of 21347464410 is 1446474312.

21347464410 is a `hidden beast` number, since 2 + 1 + 3 + 4 + 7 + 4 + 644 + 1 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39532072 + ... + 39532611.

It is an arithmetic number, because the mean of its divisors is an integer number (1778955390).

Almost surely, 2^21347464410 is an apocalyptic number.

21347464410 is an abundant number, since it is smaller than the sum of its proper divisors (35579108070).

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

21347464410 is a wasteful number, since it uses less digits than its factorization.

21347464410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79064699 (or 79064693 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 21347464410 in words is "twenty-one billion, three hundred forty-seven million, four hundred sixty-four thousand, four hundred ten".