55151051615 has 24 divisors (see below), whose sum is σ = 72943200960. Its totient is φ = 40000403520.

The previous prime is 55151051597. The next prime is 55151051617. The reversal of 55151051615 is 51615015155.

It is not a de Polignac number, because 55151051615 - 2²⁰ = 55150003039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55151051617) 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 23 ways as a sum of consecutive naturals, for example, 97841 + ... + 346229.

It is an arithmetic number, because the mean of its divisors is an integer number (3039300040).

Almost surely, 2^55151051615 is an apocalyptic number.

55151051615 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55151051615 is a deficient number, since it is larger than the sum of its proper divisors (17792149345).

55151051615 is a wasteful number, since it uses less digits than its factorization.

55151051615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248783 (or 248772 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 55151051615 in words is "fifty-five billion, one hundred fifty-one million, fifty-one thousand, six hundred fifteen".