20516374364 has 12 divisors (see below), whose sum is σ = 36040172784. Its totient is φ = 10219182144.

The previous prime is 20516374327. The next prime is 20516374387. The reversal of 20516374364 is 46347361502.

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 3 ways as a sum of consecutive naturals, for example, 9750077 + ... + 9752180.

It is an arithmetic number, because the mean of its divisors is an integer number (3003347732).

Almost surely, 2^20516374364 is an apocalyptic number.

It is an amenable number.

20516374364 is a deficient number, since it is larger than the sum of its proper divisors (15523798420).

20516374364 is a wasteful number, since it uses less digits than its factorization.

20516374364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19502524 (or 19502522 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 20516374364 in words is "twenty billion, five hundred sixteen million, three hundred seventy-four thousand, three hundred sixty-four".