18091624564996 has 6 divisors (see below), whose sum is σ = 31660342988750. Its totient is φ = 9045812282496.

The previous prime is 18091624564991. The next prime is 18091624565017. The reversal of 18091624564996 is 69946542619081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11268871603396 + 6822752961600 = 3356914^2 + 2612040^2 .

It is not an unprimeable number, because it can be changed into a prime (18091624564991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2261453070621 + ... + 2261453070628.

Almost surely, 2^{18091624564996} is an apocalyptic number.

It is an amenable number.

18091624564996 is a deficient number, since it is larger than the sum of its proper divisors (13568718423754).

18091624564996 is a wasteful number, since it uses less digits than its factorization.

18091624564996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522906141253 (or 4522906141251 counting only the distinct ones).

The product of its (nonzero) digits is 201553920, while the sum is 70.

The spelling of 18091624564996 in words is "eighteen trillion, ninety-one billion, six hundred twenty-four million, five hundred sixty-four thousand, nine hundred ninety-six".