55215213716736 has 432 divisors, whose sum is σ = 165609033408000. Its totient is φ = 17671291158528.

The previous prime is 55215213716717. The next prime is 55215213716749. The reversal of 55215213716736 is 63761731251255.

55215213716736 is a `hidden beast` number, since 5 + 5 + 2 + 1 + 521 + 37 + 16 + 73 + 6 = 666.

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, 20457654715 + ... + 20457657413.

It is an arithmetic number, because the mean of its divisors is an integer number (383354244000).

Almost surely, 2^{55215213716736} 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 55215213716736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82804516704000).

55215213716736 is an abundant number, since it is smaller than the sum of its proper divisors (110393819691264).

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

55215213716736 is a wasteful number, since it uses less digits than its factorization.

55215213716736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4346 (or 4329 counting only the distinct ones).

The product of its digits is 7938000, while the sum is 54.

The spelling of 55215213716736 in words is "fifty-five trillion, two hundred fifteen billion, two hundred thirteen million, seven hundred sixteen thousand, seven hundred thirty-six".