55955337648 has 80 divisors (see below), whose sum is σ = 165530405376. Its totient is φ = 15955407360.

The previous prime is 55955337623. The next prime is 55955337661. The reversal of 55955337648 is 84673355955.

It is a super-2 number, since 2×55955337648² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55955337591 and 55955337600.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3468 + ... + 334548.

Almost surely, 2^55955337648 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 55955337648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82765202688).

55955337648 is an abundant number, since it is smaller than the sum of its proper divisors (109575067728).

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

55955337648 is a wasteful number, since it uses less digits than its factorization.

55955337648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331602 (or 331596 counting only the distinct ones).

The product of its digits is 68040000, while the sum is 60.

The spelling of 55955337648 in words is "fifty-five billion, nine hundred fifty-five million, three hundred thirty-seven thousand, six hundred forty-eight".