55150317817 has 16 divisors (see below), whose sum is σ = 64119029760. Its totient is φ = 46461089808.

The previous prime is 55150317811. The next prime is 55150317829. The reversal of 55150317817 is 71871305155.

It is not a de Polignac number, because 55150317817 - 2³ = 55150317809 is a prime.

It is a super-2 number, since 2×55150317817² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55150317811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194767 + ... + 385012.

It is an arithmetic number, because the mean of its divisors is an integer number (4007439360).

Almost surely, 2^55150317817 is an apocalyptic number.

It is an amenable number.

55150317817 is a deficient number, since it is larger than the sum of its proper divisors (8968711943).

55150317817 is a wasteful number, since it uses less digits than its factorization.

55150317817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580020.

The product of its (nonzero) digits is 147000, while the sum is 43.

The spelling of 55150317817 in words is "fifty-five billion, one hundred fifty million, three hundred seventeen thousand, eight hundred seventeen".