55597985960500 has 96 divisors (see below), whose sum is σ = 124016115944448. Its totient is φ = 21764864672000.

The previous prime is 55597985960479. The next prime is 55597985960533. The reversal of 55597985960500 is 506958979555.

It is a super-2 number, since 2×55597985960500² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 542352249 + ... + 542454751.

It is an arithmetic number, because the mean of its divisors is an integer number (1291834541088).

Almost surely, 2^{55597985960500} is an apocalyptic number.

55597985960500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55597985960500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62008057972224).

55597985960500 is an abundant number, since it is smaller than the sum of its proper divisors (68418129983948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55597985960500 is a wasteful number, since it uses less digits than its factorization.

55597985960500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125650 (or 125638 counting only the distinct ones).

The product of its (nonzero) digits is 765450000, while the sum is 73.

The spelling of 55597985960500 in words is "fifty-five trillion, five hundred ninety-seven billion, nine hundred eighty-five million, nine hundred sixty thousand, five hundred".