21473144650674 has 48 divisors (see below), whose sum is σ = 49422382577568. Its totient is φ = 6714729242496.

The previous prime is 21473144650619. The next prime is 21473144650679. The reversal of 21473144650674 is 47605644137412.

21473144650674 is a `hidden beast` number, since 2 + 1 + 473 + 1 + 44 + 65 + 0 + 6 + 74 = 666.

It is a super-2 number, since 2×21473144650674² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21473144650674.

It is not an unprimeable number, because it can be changed into a prime (21473144650679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114195432 + ... + 114383315.

It is an arithmetic number, because the mean of its divisors is an integer number (1029632970366).

Almost surely, 2^{21473144650674} is an apocalyptic number.

21473144650674 is an abundant number, since it is smaller than the sum of its proper divisors (27949237926894).

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

21473144650674 is a wasteful number, since it uses less digits than its factorization.

21473144650674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228579079 (or 228579076 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 54.

The spelling of 21473144650674 in words is "twenty-one trillion, four hundred seventy-three billion, one hundred forty-four million, six hundred fifty thousand, six hundred seventy-four".