15665116622055 has 8 divisors (see below), whose sum is σ = 25064186595312. Its totient is φ = 8354728865088.

The previous prime is 15665116622053. The next prime is 15665116622087. The reversal of 15665116622055 is 55022661156651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15665116622055 - 2¹ = 15665116622053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15665116621989 and 15665116622007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15665116622053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522170554054 + ... + 522170554083.

It is an arithmetic number, because the mean of its divisors is an integer number (3133023324414).

Almost surely, 2^{15665116622055} is an apocalyptic number.

15665116622055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15665116622055 is a deficient number, since it is larger than the sum of its proper divisors (9399069973257).

15665116622055 is a wasteful number, since it uses less digits than its factorization.

15665116622055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044341108145.

The product of its (nonzero) digits is 3240000, while the sum is 51.

The spelling of 15665116622055 in words is "fifteen trillion, six hundred sixty-five billion, one hundred sixteen million, six hundred twenty-two thousand, fifty-five".