55791383648 has 384 divisors, whose sum is σ = 153080202240. Its totient is φ = 19317841920.

The previous prime is 55791383639. The next prime is 55791383651. The reversal of 55791383648 is 84638319755.

It is a happy number.

It is a super-2 number, since 2×55791383648² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

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, 100163786 + ... + 100164342.

It is an arithmetic number, because the mean of its divisors is an integer number (398646360).

Almost surely, 2^55791383648 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 55791383648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76540101120).

55791383648 is an abundant number, since it is smaller than the sum of its proper divisors (97288818592).

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

55791383648 is a wasteful number, since it uses less digits than its factorization.

55791383648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 702 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 59.

The spelling of 55791383648 in words is "fifty-five billion, seven hundred ninety-one million, three hundred eighty-three thousand, six hundred forty-eight".