161405676099 has 12 divisors (see below), whose sum is σ = 233166773112. Its totient is φ = 107592134400.

The previous prime is 161405676073. The next prime is 161405676137. The reversal of 161405676099 is 990676504161.

It is a happy number.

161405676099 is a `hidden beast` number, since 1 + 6 + 14 + 0 + 567 + 60 + 9 + 9 = 666.

It is not a de Polignac number, because 161405676099 - 2⁸ = 161405675843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161405676049) 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, 882637 + ... + 1049694.

It is an arithmetic number, because the mean of its divisors is an integer number (19430564426).

Almost surely, 2^161405676099 is an apocalyptic number.

161405676099 is a deficient number, since it is larger than the sum of its proper divisors (71761097013).

161405676099 is a wasteful number, since it uses less digits than its factorization.

161405676099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941618 (or 1941615 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 161405676099 in words is "one hundred sixty-one billion, four hundred five million, six hundred seventy-six thousand, ninety-nine".