16403588997 has 16 divisors (see below), whose sum is σ = 21975959040. Its totient is φ = 10883512512.

The previous prime is 16403588989. The next prime is 16403589001. The reversal of 16403588997 is 79988530461.

It is not a de Polignac number, because 16403588997 - 2³ = 16403588989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16403588997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16403588947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3228423 + ... + 3233499.

It is an arithmetic number, because the mean of its divisors is an integer number (1373497440).

Almost surely, 2^16403588997 is an apocalyptic number.

It is an amenable number.

16403588997 is a deficient number, since it is larger than the sum of its proper divisors (5572370043).

16403588997 is a wasteful number, since it uses less digits than its factorization.

16403588997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10012.

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 16403588997 in words is "sixteen billion, four hundred three million, five hundred eighty-eight thousand, nine hundred ninety-seven".