55145854155 has 64 divisors (see below), whose sum is σ = 103415040000. Its totient is φ = 25082386560.

The previous prime is 55145854147. The next prime is 55145854157.

55145854155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55145854155 - 2³ = 55145854147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55145854157) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 996925 + ... + 1050785.

It is an arithmetic number, because the mean of its divisors is an integer number (1615860000).

Almost surely, 2^55145854155 is an apocalyptic number.

55145854155 is a deficient number, since it is larger than the sum of its proper divisors (48269185845).

55145854155 is a wasteful number, since it uses less digits than its factorization.

55145854155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54089 (or 54075 counting only the distinct ones).

The product of its digits is 2000000, while the sum is 48.

The spelling of 55145854155 in words is "fifty-five billion, one hundred forty-five million, eight hundred fifty-four thousand, one hundred fifty-five".