20455964675 has 6 divisors (see below), whose sum is σ = 25365396228. Its totient is φ = 16364771720.

The previous prime is 20455964657. The next prime is 20455964693. The reversal of 20455964675 is 57646955402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20455964657) and next prime (20455964693).

It is not a de Polignac number, because 20455964675 - 2¹⁴ = 20455948291 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 409119269 + ... + 409119318.

It is an arithmetic number, because the mean of its divisors is an integer number (4227566038).

Almost surely, 2^20455964675 is an apocalyptic number.

20455964675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20455964675 is a deficient number, since it is larger than the sum of its proper divisors (4909431553).

20455964675 is an equidigital number, since it uses as much as digits as its factorization.

20455964675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818238597 (or 818238592 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 53.

The spelling of 20455964675 in words is "twenty billion, four hundred fifty-five million, nine hundred sixty-four thousand, six hundred seventy-five".