20538902596 has 27 divisors (see below), whose sum is σ = 36285884607. Its totient is φ = 10172427720.

The previous prime is 20538902543. The next prime is 20538902617. The reversal of 20538902596 is 69520983502.

It is a happy number.

The square root of 20538902596 is 143314.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 37547995 + ... + 37548541.

Almost surely, 2^20538902596 is an apocalyptic number.

20538902596 is the 143314-th square number.

It is an amenable number.

20538902596 is a deficient number, since it is larger than the sum of its proper divisors (15746982011).

20538902596 is an frugal number, since it uses more digits than its factorization.

20538902596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 49.

Multiplying 20538902596 by its sum of digits (49), we get a square (1006406227204 = 1003198²).

The spelling of 20538902596 in words is "twenty billion, five hundred thirty-eight million, nine hundred two thousand, five hundred ninety-six".