55145152512 has 360 divisors, whose sum is σ = 174136944800. Its totient is φ = 17414258688.

The previous prime is 55145152471. The next prime is 55145152529. The reversal of 55145152512 is 21525154155.

55145152512 is a `hidden beast` number, since 5 + 51 + 45 + 1 + 52 + 512 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (50000) is a multiple of the sum of its prime factors (80).

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2902376439 + ... + 2902376457.

Almost surely, 2^55145152512 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 55145152512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87068472400).

55145152512 is an abundant number, since it is smaller than the sum of its proper divisors (118991792288).

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

55145152512 is an frugal number, since it uses more digits than its factorization.

55145152512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 24 counting only the distinct ones).

The product of its digits is 50000, while the sum is 36.

The spelling of 55145152512 in words is "fifty-five billion, one hundred forty-five million, one hundred fifty-two thousand, five hundred twelve".