20161694008 has 16 divisors (see below), whose sum is σ = 38258637480. Its totient is φ = 9959390688.

The previous prime is 20161693969. The next prime is 20161694057. The reversal of 20161694008 is 80049616102.

It is a happy number.

It is a congruent number.

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, 15181335 + ... + 15182662.

Almost surely, 2^20161694008 is an apocalyptic number.

It is an amenable number.

20161694008 is a deficient number, since it is larger than the sum of its proper divisors (18096943472).

20161694008 is a wasteful number, since it uses less digits than its factorization.

20161694008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30364086 (or 30364082 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 20161694008 in words is "twenty billion, one hundred sixty-one million, six hundred ninety-four thousand, eight".