161074632555 has 12 divisors (see below), whose sum is σ = 279196029840. Its totient is φ = 85906470672.

The previous prime is 161074632553. The next prime is 161074632577. The reversal of 161074632555 is 555236470161.

161074632555 is a `hidden beast` number, since 1 + 6 + 1 + 0 + 7 + 4 + 632 + 5 + 5 + 5 = 666.

It is not a de Polignac number, because 161074632555 - 2¹ = 161074632553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3579436279 = 161074632555 / (1 + 6 + 1 + 0 + 7 + 4 + 6 + 3 + 2 + 5 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 161074632555.

It is not an unprimeable number, because it can be changed into a prime (161074632553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1789718095 + ... + 1789718184.

It is an arithmetic number, because the mean of its divisors is an integer number (23266335820).

Almost surely, 2^161074632555 is an apocalyptic number.

161074632555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161074632555 is a deficient number, since it is larger than the sum of its proper divisors (118121397285).

161074632555 is a wasteful number, since it uses less digits than its factorization.

161074632555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579436290 (or 3579436287 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 161074632555 in words is "one hundred sixty-one billion, seventy-four million, six hundred thirty-two thousand, five hundred fifty-five".