161164004499 has 6 divisors (see below), whose sum is σ = 232792450956. Its totient is φ = 107442669660.

The previous prime is 161164004483. The next prime is 161164004509. The reversal of 161164004499 is 994400461161.

161164004499 is a `hidden beast` number, since 1 + 6 + 116 + 40 + 0 + 4 + 499 = 666.

It is not a de Polignac number, because 161164004499 - 2⁴ = 161164004483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161164004459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8953555797 + ... + 8953555814.

It is an arithmetic number, because the mean of its divisors is an integer number (38798741826).

Almost surely, 2^161164004499 is an apocalyptic number.

161164004499 is a deficient number, since it is larger than the sum of its proper divisors (71628446457).

161164004499 is a wasteful number, since it uses less digits than its factorization.

161164004499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17907111617 (or 17907111614 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 161164004499 in words is "one hundred sixty-one billion, one hundred sixty-four million, four thousand, four hundred ninety-nine".