55489708263 has 16 divisors (see below), whose sum is σ = 80739360000. Its totient is φ = 33618852480.

The previous prime is 55489708249. The next prime is 55489708283. The reversal of 55489708263 is 36280798455.

It is not a de Polignac number, because 55489708263 - 2⁶ = 55489708199 is a prime.

It is a super-2 number, since 2×55489708263² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55489708223) 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, 181378 + ... + 379311.

It is an arithmetic number, because the mean of its divisors is an integer number (5046210000).

Almost surely, 2^55489708263 is an apocalyptic number.

55489708263 is a deficient number, since it is larger than the sum of its proper divisors (25249651737).

55489708263 is a wasteful number, since it uses less digits than its factorization.

55489708263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563702.

The product of its (nonzero) digits is 14515200, while the sum is 57.

The spelling of 55489708263 in words is "fifty-five billion, four hundred eighty-nine million, seven hundred eight thousand, two hundred sixty-three".