55263423985 has 16 divisors (see below), whose sum is σ = 82679824512. Its totient is φ = 34449926400.

The previous prime is 55263423983. The next prime is 55263424043. The reversal of 55263423985 is 58932436255.

It is not a de Polignac number, because 55263423985 - 2¹ = 55263423983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55263423983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71770296 + ... + 71771065.

It is an arithmetic number, because the mean of its divisors is an integer number (5167489032).

Almost surely, 2^55263423985 is an apocalyptic number.

55263423985 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55263423985 is a deficient number, since it is larger than the sum of its proper divisors (27416400527).

55263423985 is a wasteful number, since it uses less digits than its factorization.

55263423985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143541384.

The product of its digits is 7776000, while the sum is 52.

The spelling of 55263423985 in words is "fifty-five billion, two hundred sixty-three million, four hundred twenty-three thousand, nine hundred eighty-five".