21315454702 has 16 divisors (see below), whose sum is σ = 32245954560. Its totient is φ = 10566912888.

The previous prime is 21315454679. The next prime is 21315454751. The reversal of 21315454702 is 20745451312.

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, 374493 + ... + 427639.

It is an arithmetic number, because the mean of its divisors is an integer number (2015372160).

Almost surely, 2^21315454702 is an apocalyptic number.

21315454702 is a deficient number, since it is larger than the sum of its proper divisors (10930499858).

21315454702 is a wasteful number, since it uses less digits than its factorization.

21315454702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54855.

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 21315454702 in words is "twenty-one billion, three hundred fifteen million, four hundred fifty-four thousand, seven hundred two".