20994960675 has 24 divisors (see below), whose sum is σ = 37381798384. Its totient is φ = 10335980160.

The previous prime is 20994960667. The next prime is 20994960683. The reversal of 20994960675 is 57606949902.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20994960667) and next prime (20994960683).

It is not a de Polignac number, because 20994960675 - 2³ = 20994960667 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10765672 + ... + 10767621.

Almost surely, 2^20994960675 is an apocalyptic number.

20994960675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20994960675 is a deficient number, since it is larger than the sum of its proper divisors (16386837709).

20994960675 is a wasteful number, since it uses less digits than its factorization.

20994960675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21533319 (or 21533314 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 20994960675 in words is "twenty billion, nine hundred ninety-four million, nine hundred sixty thousand, six hundred seventy-five".