55415552918 has 64 divisors (see below), whose sum is σ = 95971392000. Its totient is φ = 23751932160.

The previous prime is 55415552917. The next prime is 55415552921. The reversal of 55415552918 is 81925551455.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55415552917) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 16796033 + ... + 16799331.

It is an arithmetic number, because the mean of its divisors is an integer number (1499553000).

Almost surely, 2^55415552918 is an apocalyptic number.

55415552918 is a deficient number, since it is larger than the sum of its proper divisors (40555839082).

55415552918 is a wasteful number, since it uses less digits than its factorization.

55415552918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3797.

The product of its digits is 1800000, while the sum is 50.

The spelling of 55415552918 in words is "fifty-five billion, four hundred fifteen million, five hundred fifty-two thousand, nine hundred eighteen".