55945398215 has 24 divisors (see below), whose sum is σ = 79280007840. Its totient is φ = 37125034560.

The previous prime is 55945398211. The next prime is 55945398241. The reversal of 55945398215 is 51289354955.

It is a happy number.

55945398215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55945398215 - 2² = 55945398211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55945398211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 798020 + ... + 865289.

It is an arithmetic number, because the mean of its divisors is an integer number (3303333660).

Almost surely, 2^55945398215 is an apocalyptic number.

55945398215 is a deficient number, since it is larger than the sum of its proper divisors (23334609625).

55945398215 is a wasteful number, since it uses less digits than its factorization.

55945398215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663383 (or 1663352 counting only the distinct ones).

The product of its digits is 9720000, while the sum is 56.

The spelling of 55945398215 in words is "fifty-five billion, nine hundred forty-five million, three hundred ninety-eight thousand, two hundred fifteen".