20502717074 has 16 divisors (see below), whose sum is σ = 35628989568. Its totient is φ = 8666510112.

The previous prime is 20502717041. The next prime is 20502717089. The reversal of 20502717074 is 47071720502.

It is a super-2 number, since 2×20502717074² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10029662 + ... + 10031705.

It is an arithmetic number, because the mean of its divisors is an integer number (2226811848).

Almost surely, 2^20502717074 is an apocalyptic number.

20502717074 is a deficient number, since it is larger than the sum of its proper divisors (15126272494).

20502717074 is a wasteful number, since it uses less digits than its factorization.

20502717074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20061449.

The product of its (nonzero) digits is 27440, while the sum is 35.

The spelling of 20502717074 in words is "twenty billion, five hundred two million, seven hundred seventeen thousand, seventy-four".