20663048739 has 16 divisors (see below), whose sum is σ = 29019012480. Its totient is φ = 13042137600.

The previous prime is 20663048713. The next prime is 20663048779. The reversal of 20663048739 is 93784036602.

It is not a de Polignac number, because 20663048739 - 2⁹ = 20663048227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20663048779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21957 + ... + 204470.

It is an arithmetic number, because the mean of its divisors is an integer number (1813688280).

Almost surely, 2^20663048739 is an apocalyptic number.

20663048739 is a deficient number, since it is larger than the sum of its proper divisors (8355963741).

20663048739 is a wasteful number, since it uses less digits than its factorization.

20663048739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228050.

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 20663048739 in words is "twenty billion, six hundred sixty-three million, forty-eight thousand, seven hundred thirty-nine".