20347190674 has 32 divisors (see below), whose sum is σ = 31289031216. Its totient is φ = 9920102400.

The previous prime is 20347190641. The next prime is 20347190681. The reversal of 20347190674 is 47609174302.

It can be written as a sum of positive squares in 8 ways, for example, as 8442853225 + 11904337449 = 91885^2 + 109107^2 .

It is a super-2 number, since 2×20347190674² (a number of 21 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 20347190674.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16941274 + ... + 16942474.

Almost surely, 2^20347190674 is an apocalyptic number.

20347190674 is a deficient number, since it is larger than the sum of its proper divisors (10941840542).

20347190674 is a wasteful number, since it uses less digits than its factorization.

20347190674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110.

The product of its (nonzero) digits is 254016, while the sum is 43.

The spelling of 20347190674 in words is "twenty billion, three hundred forty-seven million, one hundred ninety thousand, six hundred seventy-four".