56204643840 has 320 divisors, whose sum is σ = 190838571264. Its totient is φ = 14062583808.

The previous prime is 56204643829. The next prime is 56204643851. The reversal of 56204643840 is 4834640265.

It is an interprime number because it is at equal distance from previous prime (56204643829) and next prime (56204643851).

It is a tau number, because it is divible by the number of its divisors (320).

It is a junction number, because it is equal to n+sod(n) for n = 56204643792 and 56204643801.

It is a congruent number.

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, 71415927 + ... + 71416713.

Almost surely, 2^56204643840 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 56204643840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95419285632).

56204643840 is an abundant number, since it is smaller than the sum of its proper divisors (134633927424).

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

56204643840 is a wasteful number, since it uses less digits than its factorization.

56204643840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377 (or 1361 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 56204643840 in words is "fifty-six billion, two hundred four million, six hundred forty-three thousand, eight hundred forty".