20361577636 has 9 divisors (see below), whose sum is σ = 35633260299. Its totient is φ = 10180646124.

The previous prime is 20361577591. The next prime is 20361577651. The reversal of 20361577636 is 63677516302.

The square root of 20361577636 is 142694.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 249715 + ... + 321061.

Almost surely, 2^20361577636 is an apocalyptic number.

20361577636 is the 142694-th square number.

It is an amenable number.

20361577636 is a deficient number, since it is larger than the sum of its proper divisors (15271682663).

20361577636 is an frugal number, since it uses more digits than its factorization.

20361577636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142698 (or 71349 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 46.

The spelling of 20361577636 in words is "twenty billion, three hundred sixty-one million, five hundred seventy-seven thousand, six hundred thirty-six".