20887620363 has 8 divisors (see below), whose sum is σ = 30944622800. Its totient is φ = 13925080224.

The previous prime is 20887620353. The next prime is 20887620371. The reversal of 20887620363 is 36302678802.

20887620363 is a `hidden beast` number, since 208 + 87 + 6 + 2 + 0 + 363 = 666.

It is not a de Polignac number, because 20887620363 - 2⁵ = 20887620331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20887620353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386807758 + ... + 386807811.

It is an arithmetic number, because the mean of its divisors is an integer number (3868077850).

Almost surely, 2^20887620363 is an apocalyptic number.

20887620363 is a deficient number, since it is larger than the sum of its proper divisors (10057002437).

20887620363 is an equidigital number, since it uses as much as digits as its factorization.

20887620363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773615578 (or 773615572 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 20887620363 in words is "twenty billion, eight hundred eighty-seven million, six hundred twenty thousand, three hundred sixty-three".