55145660424 has 32 divisors (see below), whose sum is σ = 137876061120. Its totient is φ = 18380298816.

The previous prime is 55145660419. The next prime is 55145660429. The reversal of 55145660424 is 42406654155.

It is an interprime number because it is at equal distance from previous prime (55145660419) and next prime (55145660429).

It is not an unprimeable number, because it can be changed into a prime (55145660429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203154 + ... + 389310.

It is an arithmetic number, because the mean of its divisors is an integer number (4308626910).

Almost surely, 2^55145660424 is an apocalyptic number.

It is an amenable number.

55145660424 is an abundant number, since it is smaller than the sum of its proper divisors (82730400696).

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

55145660424 is a wasteful number, since it uses less digits than its factorization.

55145660424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198509 (or 198505 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 55145660424 in words is "fifty-five billion, one hundred forty-five million, six hundred sixty thousand, four hundred twenty-four".