20366072516 has 12 divisors (see below), whose sum is σ = 36509910780. Its totient is φ = 9934669440.

The previous prime is 20366072459. The next prime is 20366072521. The reversal of 20366072516 is 61527066302.

It can be written as a sum of positive squares in 2 ways, for example, as 8788312516 + 11577760000 = 93746^2 + 107600^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20366072516.

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, 62091521 + ... + 62091848.

It is an arithmetic number, because the mean of its divisors is an integer number (3042492565).

Almost surely, 2^20366072516 is an apocalyptic number.

It is an amenable number.

20366072516 is a deficient number, since it is larger than the sum of its proper divisors (16143838264).

20366072516 is a wasteful number, since it uses less digits than its factorization.

20366072516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124183414 (or 124183412 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 20366072516 in words is "twenty billion, three hundred sixty-six million, seventy-two thousand, five hundred sixteen".