55723707648 has 360 divisors, whose sum is σ = 190570067072. Its totient is φ = 15864532992.

The previous prime is 55723707629. The next prime is 55723707707. The reversal of 55723707648 is 84670732755.

It is a happy number.

55723707648 is a `hidden beast` number, since 5 + 572 + 3 + 7 + 0 + 7 + 64 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 55723707594 and 55723707603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 57624861 + ... + 57625827.

Almost surely, 2^55723707648 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 55723707648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95285033536).

55723707648 is an abundant number, since it is smaller than the sum of its proper divisors (134846359424).

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

55723707648 is an equidigital number, since it uses as much as digits as its factorization.

55723707648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399 (or 1376 counting only the distinct ones).

The product of its (nonzero) digits is 9878400, while the sum is 54.

The spelling of 55723707648 in words is "fifty-five billion, seven hundred twenty-three million, seven hundred seven thousand, six hundred forty-eight".