54551509644 has 24 divisors (see below), whose sum is σ = 134774318448. Its totient is φ = 17114199040.

The previous prime is 54551509619. The next prime is 54551509669. The reversal of 54551509644 is 44690515545.

It is an interprime number because it is at equal distance from previous prime (54551509619) and next prime (54551509669).

It is a junction number, because it is equal to n+sod(n) for n = 54551509593 and 54551509602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133704477 + ... + 133704884.

It is an arithmetic number, because the mean of its divisors is an integer number (5615596602).

Almost surely, 2^54551509644 is an apocalyptic number.

It is an amenable number.

54551509644 is an abundant number, since it is smaller than the sum of its proper divisors (80222808804).

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

54551509644 is a wasteful number, since it uses less digits than its factorization.

54551509644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267409385 (or 267409383 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 48.

The spelling of 54551509644 in words is "fifty-four billion, five hundred fifty-one million, five hundred nine thousand, six hundred forty-four".