20635994967 has 32 divisors (see below), whose sum is σ = 32474148864. Its totient is φ = 11406528000.

The previous prime is 20635994921. The next prime is 20635994987. The reversal of 20635994967 is 76949953602.

It is not a de Polignac number, because 20635994967 - 2⁸ = 20635994711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20635994967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20635994987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1817793 + ... + 1829109.

It is an arithmetic number, because the mean of its divisors is an integer number (1014817152).

Almost surely, 2^20635994967 is an apocalyptic number.

20635994967 is a deficient number, since it is larger than the sum of its proper divisors (11838153897).

20635994967 is a wasteful number, since it uses less digits than its factorization.

20635994967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14159.

The product of its (nonzero) digits is 22044960, while the sum is 60.

The spelling of 20635994967 in words is "twenty billion, six hundred thirty-five million, nine hundred ninety-four thousand, nine hundred sixty-seven".