55150817280 has 416 divisors, whose sum is σ = 196670496960. Its totient is φ = 13101957120.

The previous prime is 55150817263. The next prime is 55150817297. The reversal of 55150817280 is 8271805155.

It is an interprime number because it is at equal distance from previous prime (55150817263) and next prime (55150817297).

It is a tau number, because it is divible by the number of its divisors (416).

It is a super-2 number, since 2×55150817280² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23161690 + ... + 23164070.

Almost surely, 2^55150817280 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 55150817280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98335248480).

55150817280 is an abundant number, since it is smaller than the sum of its proper divisors (141519679680).

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

55150817280 is a wasteful number, since it uses less digits than its factorization.

55150817280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455 (or 2433 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 42.

The spelling of 55150817280 in words is "fifty-five billion, one hundred fifty million, eight hundred seventeen thousand, two hundred eighty".