56998196640 has 1152 divisors, whose sum is σ = 255722987520. Its totient is φ = 11645337600.

The previous prime is 56998196639. The next prime is 56998196641. The reversal of 56998196640 is 4669189965.

56998196640 is a `hidden beast` number, since 569 + 9 + 8 + 1 + 9 + 6 + 64 + 0 = 666.

56998196640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (56998196639) and next prime (56998196641).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (56998196641) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 236506920 + ... + 236507160.

It is an arithmetic number, because the mean of its divisors is an integer number (221981760).

Almost surely, 2^56998196640 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 56998196640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127861493760).

56998196640 is an abundant number, since it is smaller than the sum of its proper divisors (198724790880).

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

56998196640 is a wasteful number, since it uses less digits than its factorization.

56998196640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 63.

The spelling of 56998196640 in words is "fifty-six billion, nine hundred ninety-eight million, one hundred ninety-six thousand, six hundred forty".