55660520412 has 288 divisors, whose sum is σ = 171517651200. Its totient is φ = 15560366976.

The previous prime is 55660520411. The next prime is 55660520417. The reversal of 55660520412 is 21402506655.

55660520412 is a `hidden beast` number, since 5 + 5 + 6 + 605 + 2 + 0 + 41 + 2 = 666.

55660520412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×55660520412³ (a number of 33 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55660520411) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 63466518 + ... + 63467394.

It is an arithmetic number, because the mean of its divisors is an integer number (595547400).

Almost surely, 2^55660520412 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 55660520412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85758825600).

55660520412 is an abundant number, since it is smaller than the sum of its proper divisors (115857130788).

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

55660520412 is a wasteful number, since it uses less digits than its factorization.

55660520412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 55660520412 in words is "fifty-five billion, six hundred sixty million, five hundred twenty thousand, four hundred twelve".