21337474074 has 16 divisors (see below), whose sum is σ = 48771369408. Its totient is φ = 6096421152.

The previous prime is 21337474073. The next prime is 21337474091. The reversal of 21337474074 is 47047473312.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 508035097 = 21337474074 / (2 + 1 + 3 + 3 + 7 + 4 + 7 + 4 + 0 + 7 + 4).

It is not an unprimeable number, because it can be changed into a prime (21337474073) 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, 254017507 + ... + 254017590.

It is an arithmetic number, because the mean of its divisors is an integer number (3048210588).

Almost surely, 2^21337474074 is an apocalyptic number.

21337474074 is an abundant number, since it is smaller than the sum of its proper divisors (27433895334).

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

21337474074 is a wasteful number, since it uses less digits than its factorization.

21337474074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508035109.

The product of its (nonzero) digits is 395136, while the sum is 42.

The spelling of 21337474074 in words is "twenty-one billion, three hundred thirty-seven million, four hundred seventy-four thousand, seventy-four".