21735400471674 has 64 divisors (see below), whose sum is σ = 46406815902720. Its totient is φ = 6762915613440.

The previous prime is 21735400471627. The next prime is 21735400471679. The reversal of 21735400471674 is 47617400453712.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (21735400471679) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12977427 + ... + 14556249.

It is an arithmetic number, because the mean of its divisors is an integer number (725106498480).

Almost surely, 2^{21735400471674} is an apocalyptic number.

21735400471674 is an abundant number, since it is smaller than the sum of its proper divisors (24671415431046).

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

21735400471674 is a wasteful number, since it uses less digits than its factorization.

21735400471674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579955.

The product of its (nonzero) digits is 3951360, while the sum is 51.

The spelling of 21735400471674 in words is "twenty-one trillion, seven hundred thirty-five billion, four hundred million, four hundred seventy-one thousand, six hundred seventy-four".