21244462706 has 32 divisors (see below), whose sum is σ = 32635008000. Its totient is φ = 10369933200.

The previous prime is 21244462699. The next prime is 21244462747. The reversal of 21244462706 is 60726444212.

It is a self number, because there is not a number n which added to its sum of digits gives 21244462706.

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, 4986005 + ... + 4990263.

It is an arithmetic number, because the mean of its divisors is an integer number (1019844000).

Almost surely, 2^21244462706 is an apocalyptic number.

21244462706 is a deficient number, since it is larger than the sum of its proper divisors (11390545294).

21244462706 is a wasteful number, since it uses less digits than its factorization.

21244462706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694.

The product of its (nonzero) digits is 129024, while the sum is 38.

The spelling of 21244462706 in words is "twenty-one billion, two hundred forty-four million, four hundred sixty-two thousand, seven hundred six".