16497603998 has 16 divisors (see below), whose sum is σ = 26256804480. Its totient is φ = 7747362816.

The previous prime is 16497603989. The next prime is 16497604003. The reversal of 16497603998 is 89930679461.

It is a self number, because there is not a number n which added to its sum of digits gives 16497603998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490211 + ... + 522782.

It is an arithmetic number, because the mean of its divisors is an integer number (1641050280).

Almost surely, 2^16497603998 is an apocalyptic number.

16497603998 is a deficient number, since it is larger than the sum of its proper divisors (9759200482).

16497603998 is a wasteful number, since it uses less digits than its factorization.

16497603998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013491.

The product of its (nonzero) digits is 17635968, while the sum is 62.

The spelling of 16497603998 in words is "sixteen billion, four hundred ninety-seven million, six hundred three thousand, nine hundred ninety-eight".