16665090916 has 6 divisors (see below), whose sum is σ = 29163909110. Its totient is φ = 8332545456.

The previous prime is 16665090907. The next prime is 16665090943. The reversal of 16665090916 is 61909056661.

It can be written as a sum of positive squares in only one way, i.e., 8520028416 + 8145062500 = 92304^2 + 90250^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16665090916.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2083136361 + ... + 2083136368.

Almost surely, 2^16665090916 is an apocalyptic number.

It is an amenable number.

16665090916 is a deficient number, since it is larger than the sum of its proper divisors (12498818194).

16665090916 is a wasteful number, since it uses less digits than its factorization.

16665090916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166272733 (or 4166272731 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 16665090916 in words is "sixteen billion, six hundred sixty-five million, ninety thousand, nine hundred sixteen".