54777631636 has 96 divisors (see below), whose sum is σ = 127221937920. Its totient is φ = 20028902400.

The previous prime is 54777631633. The next prime is 54777631639. The reversal of 54777631636 is 63613677745.

It is an interprime number because it is at equal distance from previous prime (54777631633) and next prime (54777631639).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54777631631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186966 + ... + 380146.

It is an arithmetic number, because the mean of its divisors is an integer number (1325228520).

Almost surely, 2^54777631636 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 54777631636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63610968960).

54777631636 is an abundant number, since it is smaller than the sum of its proper divisors (72444306284).

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

54777631636 is a wasteful number, since it uses less digits than its factorization.

54777631636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193265 (or 193263 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 55.

The spelling of 54777631636 in words is "fifty-four billion, seven hundred seventy-seven million, six hundred thirty-one thousand, six hundred thirty-six".