180109991076 has 12 divisors (see below), whose sum is σ = 420256645872. Its totient is φ = 60036663688.

The previous prime is 180109991057. The next prime is 180109991081. The reversal of 180109991076 is 670199901081.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7504582950 + ... + 7504582973.

It is an arithmetic number, because the mean of its divisors is an integer number (35021387156).

Almost surely, 2^180109991076 is an apocalyptic number.

It is an amenable number.

180109991076 is an abundant number, since it is smaller than the sum of its proper divisors (240146654796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180109991076 is a wasteful number, since it uses less digits than its factorization.

180109991076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15009165930 (or 15009165928 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 51.

The spelling of 180109991076 in words is "one hundred eighty billion, one hundred nine million, nine hundred ninety-one thousand, seventy-six".