55400367960 has 320 divisors, whose sum is σ = 224009913600. Its totient is φ = 11996377344.

The previous prime is 55400367929. The next prime is 55400367989. The reversal of 55400367960 is 6976300455.

55400367960 is a `hidden beast` number, since 5 + 540 + 0 + 36 + 79 + 6 + 0 = 666.

55400367960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 366639 + ... + 495201.

It is an arithmetic number, because the mean of its divisors is an integer number (700030980).

Almost surely, 2^55400367960 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 55400367960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112004956800).

55400367960 is an abundant number, since it is smaller than the sum of its proper divisors (168609545640).

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

55400367960 is a wasteful number, since it uses less digits than its factorization.

55400367960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128612 (or 128599 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The spelling of 55400367960 in words is "fifty-five billion, four hundred million, three hundred sixty-seven thousand, nine hundred sixty".