20347190676 has 18 divisors (see below), whose sum is σ = 51433176522. Its totient is φ = 6782396880.

The previous prime is 20347190641. The next prime is 20347190681. The reversal of 20347190676 is 67609174302.

20347190676 is a `hidden beast` number, since 20 + 3 + 471 + 90 + 6 + 76 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11970548100 + 8376642576 = 109410^2 + 91524^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 282599835 + ... + 282599906.

Almost surely, 2^20347190676 is an apocalyptic number.

It is an amenable number.

20347190676 is an abundant number, since it is smaller than the sum of its proper divisors (31085985846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20347190676 is a wasteful number, since it uses less digits than its factorization.

20347190676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565199751 (or 565199746 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 20347190676 in words is "twenty billion, three hundred forty-seven million, one hundred ninety thousand, six hundred seventy-six".