21739074074 has 16 divisors (see below), whose sum is σ = 33886425600. Its totient is φ = 10448305680.

The previous prime is 21739074073. The next prime is 21739074103. The reversal of 21739074074 is 47047093712.

It is not an unprimeable number, because it can be changed into a prime (21739074073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1167374 + ... + 1185849.

It is an arithmetic number, because the mean of its divisors is an integer number (2117901600).

Almost surely, 2^21739074074 is an apocalyptic number.

21739074074 is a deficient number, since it is larger than the sum of its proper divisors (12147351526).

21739074074 is a wasteful number, since it uses less digits than its factorization.

21739074074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353405.

The product of its (nonzero) digits is 296352, while the sum is 44.

The spelling of 21739074074 in words is "twenty-one billion, seven hundred thirty-nine million, seventy-four thousand, seventy-four".