55150755840 has 720 divisors, whose sum is σ = 209373265920. Its totient is φ = 13377208320.

The previous prime is 55150755817. The next prime is 55150755893. The reversal of 55150755840 is 4855705155.

55150755840 is a `hidden beast` number, since 5 + 5 + 1 + 50 + 7 + 558 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

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 47 ways as a sum of consecutive naturals, for example, 434257857 + ... + 434257983.

Almost surely, 2^55150755840 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 55150755840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104686632960).

55150755840 is an abundant number, since it is smaller than the sum of its proper divisors (154222510080).

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

55150755840 is a wasteful number, since it uses less digits than its factorization.

55150755840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 700000, while the sum is 45.

The spelling of 55150755840 in words is "fifty-five billion, one hundred fifty million, seven hundred fifty-five thousand, eight hundred forty".