55623807408 has 320 divisors, whose sum is σ = 164501471232. Its totient is φ = 16075653120.

The previous prime is 55623807329. The next prime is 55623807443. The reversal of 55623807408 is 80470832655.

It is a Cunningham number, because it is equal to 235847²-1.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 175469266 + ... + 175469582.

Almost surely, 2^55623807408 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 55623807408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82250735616).

55623807408 is an abundant number, since it is smaller than the sum of its proper divisors (108877663824).

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

55623807408 is a wasteful number, since it uses less digits than its factorization.

55623807408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 55623807408 in words is "fifty-five billion, six hundred twenty-three million, eight hundred seven thousand, four hundred eight".