20213630674 has 16 divisors (see below), whose sum is σ = 30903878808. Its totient is φ = 9912477952.

The previous prime is 20213630659. The next prime is 20213630711. The reversal of 20213630674 is 47603631202.

It can be written as a sum of positive squares in 4 ways, for example, as 17913948649 + 2299682025 = 133843^2 + 47955^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267114 + ... + 334330.

Almost surely, 2^20213630674 is an apocalyptic number.

20213630674 is a deficient number, since it is larger than the sum of its proper divisors (10690248134).

20213630674 is a wasteful number, since it uses less digits than its factorization.

20213630674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70109.

The product of its (nonzero) digits is 36288, while the sum is 34.

The spelling of 20213630674 in words is "twenty billion, two hundred thirteen million, six hundred thirty thousand, six hundred seventy-four".