56505621303 has 12 divisors (see below), whose sum is σ = 84642165608. Its totient is φ = 37670414040.

The previous prime is 56505621301. The next prime is 56505621323. The reversal of 56505621303 is 30312650565.

56505621303 is a `hidden beast` number, since 5 + 65 + 0 + 562 + 1 + 30 + 3 = 666.

It is not a de Polignac number, because 56505621303 - 2¹ = 56505621301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56505621301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116266468 + ... + 116266953.

Almost surely, 2^56505621303 is an apocalyptic number.

56505621303 is a deficient number, since it is larger than the sum of its proper divisors (28136544305).

56505621303 is an equidigital number, since it uses as much as digits as its factorization.

56505621303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232533436 (or 232533424 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The spelling of 56505621303 in words is "fifty-six billion, five hundred five million, six hundred twenty-one thousand, three hundred three".