55171761312 has 96 divisors (see below), whose sum is σ = 150180609600. Its totient is φ = 17713676288.

The previous prime is 55171761289. The next prime is 55171761317. The reversal of 55171761312 is 21316717155.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×55171761312² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55171761317) 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, 1142848 + ... + 1190144.

It is an arithmetic number, because the mean of its divisors is an integer number (1564381350).

Almost surely, 2^55171761312 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 55171761312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75090304800).

55171761312 is an abundant number, since it is smaller than the sum of its proper divisors (95008848288).

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

55171761312 is a wasteful number, since it uses less digits than its factorization.

55171761312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47758 (or 47750 counting only the distinct ones).

The product of its digits is 44100, while the sum is 39.

The spelling of 55171761312 in words is "fifty-five billion, one hundred seventy-one million, seven hundred sixty-one thousand, three hundred twelve".