55798135536 has 360 divisors, whose sum is σ = 176539273680. Its totient is φ = 15084748800.

The previous prime is 55798135507. The next prime is 55798135553. The reversal of 55798135536 is 63553189755.

It is a super-2 number, since 2×55798135536² (a number of 22 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 71 ways as a sum of consecutive naturals, for example, 72558960 + ... + 72559728.

Almost surely, 2^55798135536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55798135536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88269636840).

55798135536 is an abundant number, since it is smaller than the sum of its proper divisors (120741138144).

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

55798135536 is a wasteful number, since it uses less digits than its factorization.

55798135536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 829 counting only the distinct ones).

The product of its digits is 17010000, while the sum is 57.

The spelling of 55798135536 in words is "fifty-five billion, seven hundred ninety-eight million, one hundred thirty-five thousand, five hundred thirty-six".