20623131775 has 24 divisors (see below), whose sum is σ = 26540957520. Its totient is φ = 15877532160.

The previous prime is 20623131713. The next prime is 20623131811. The reversal of 20623131775 is 57713132602.

It is not a de Polignac number, because 20623131775 - 2¹¹ = 20623129727 is a prime.

It is a congruent 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, 176247 + ... + 268903.

It is an arithmetic number, because the mean of its divisors is an integer number (1105873230).

Almost surely, 2^20623131775 is an apocalyptic number.

20623131775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20623131775 is a deficient number, since it is larger than the sum of its proper divisors (5917825745).

20623131775 is a wasteful number, since it uses less digits than its factorization.

20623131775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93003 (or 92998 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The spelling of 20623131775 in words is "twenty billion, six hundred twenty-three million, one hundred thirty-one thousand, seven hundred seventy-five".