20995634335 has 16 divisors (see below), whose sum is σ = 27305653536. Its totient is φ = 15405706368.

The previous prime is 20995634327. The next prime is 20995634369. The reversal of 20995634335 is 53343659902.

It is not a de Polignac number, because 20995634335 - 2³ = 20995634327 is a prime.

It is a super-2 number, since 2×20995634335² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1018489 + ... + 1038898.

It is an arithmetic number, because the mean of its divisors is an integer number (1706603346).

Almost surely, 2^20995634335 is an apocalyptic number.

20995634335 is a deficient number, since it is larger than the sum of its proper divisors (6310019201).

20995634335 is a wasteful number, since it uses less digits than its factorization.

20995634335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057562.

The product of its (nonzero) digits is 2624400, while the sum is 49.

The spelling of 20995634335 in words is "twenty billion, nine hundred ninety-five million, six hundred thirty-four thousand, three hundred thirty-five".