55150111665 has 48 divisors (see below), whose sum is σ = 105840386496. Its totient is φ = 26340336000.

The previous prime is 55150111663. The next prime is 55150111697. The reversal of 55150111665 is 56611105155.

It is a happy number.

It is not a de Polignac number, because 55150111665 - 2¹ = 55150111663 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55150111663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 798286 + ... + 864615.

It is an arithmetic number, because the mean of its divisors is an integer number (2205008052).

Almost surely, 2^55150111665 is an apocalyptic number.

55150111665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55150111665 is a deficient number, since it is larger than the sum of its proper divisors (50690274831).

55150111665 is a wasteful number, since it uses less digits than its factorization.

55150111665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662990 (or 1662987 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 55150111665 in words is "fifty-five billion, one hundred fifty million, one hundred eleven thousand, six hundred sixty-five".