55307454136 has 64 divisors (see below), whose sum is σ = 117788398560. Its totient is φ = 24124416000.

The previous prime is 55307454133. The next prime is 55307454149. The reversal of 55307454136 is 63145470355.

It is a junction number, because it is equal to n+sod(n) for n = 55307454092 and 55307454101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55307454131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94440 + ... + 345736.

Almost surely, 2^55307454136 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 55307454136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58894199280).

55307454136 is an abundant number, since it is smaller than the sum of its proper divisors (62480944424).

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

55307454136 is a wasteful number, since it uses less digits than its factorization.

55307454136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251416 (or 251412 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 43.

The spelling of 55307454136 in words is "fifty-five billion, three hundred seven million, four hundred fifty-four thousand, one hundred thirty-six".