20318758874 has 4 divisors (see below), whose sum is σ = 30478138314. Its totient is φ = 10159379436.

The previous prime is 20318758871. The next prime is 20318758883. The reversal of 20318758874 is 47885781302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20261529649 + 57229225 = 142343^2 + 7565^2 .

It is not an unprimeable number, because it can be changed into a prime (20318758871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5079689717 + ... + 5079689720.

Almost surely, 2^20318758874 is an apocalyptic number.

20318758874 is a deficient number, since it is larger than the sum of its proper divisors (10159379440).

20318758874 is a wasteful number, since it uses less digits than its factorization.

20318758874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10159379439.

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 20318758874 in words is "twenty billion, three hundred eighteen million, seven hundred fifty-eight thousand, eight hundred seventy-four".