20694874503634 has 8 divisors (see below), whose sum is σ = 31799441310588. Its totient is φ = 10095060733440.

The previous prime is 20694874503607. The next prime is 20694874503643. The reversal of 20694874503634 is 43630547849602.

It can be written as a sum of positive squares in 2 ways, for example, as 14830994316609 + 5863880187025 = 3851103^2 + 2421545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126188259087 + ... + 126188259250.

Almost surely, 2^{20694874503634} is an apocalyptic number.

20694874503634 is a deficient number, since it is larger than the sum of its proper divisors (11104566806954).

20694874503634 is a wasteful number, since it uses less digits than its factorization.

20694874503634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252376518380.

The product of its (nonzero) digits is 104509440, while the sum is 61.

The spelling of 20694874503634 in words is "twenty trillion, six hundred ninety-four billion, eight hundred seventy-four million, five hundred three thousand, six hundred thirty-four".