16903690072172 has 6 divisors (see below), whose sum is σ = 29581457626308. Its totient is φ = 8451845036084.

The previous prime is 16903690072121. The next prime is 16903690072207. The reversal of 16903690072172 is 27127009630961.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2112961259018 + ... + 2112961259025.

It is an arithmetic number, because the mean of its divisors is an integer number (4930242937718).

Almost surely, 2^{16903690072172} is an apocalyptic number.

It is an amenable number.

16903690072172 is a deficient number, since it is larger than the sum of its proper divisors (12677767554136).

16903690072172 is a wasteful number, since it uses less digits than its factorization.

16903690072172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225922518047 (or 4225922518045 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 16903690072172 in words is "sixteen trillion, nine hundred three billion, six hundred ninety million, seventy-two thousand, one hundred seventy-two".