16290322997 has 8 divisors (see below), whose sum is σ = 17581819416. Its totient is φ = 15004311552.

The previous prime is 16290322973. The next prime is 16290323009. The reversal of 16290322997 is 79922309261.

It can be written as a sum of positive squares in 4 ways, for example, as 5990914801 + 10299408196 = 77401^2 + 101486^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16290322997 - 2²² = 16286128693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16290322397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1365068 + ... + 1376949.

It is an arithmetic number, because the mean of its divisors is an integer number (2197727427).

Almost surely, 2^16290322997 is an apocalyptic number.

It is an amenable number.

16290322997 is a deficient number, since it is larger than the sum of its proper divisors (1291496419).

16290322997 is a wasteful number, since it uses less digits than its factorization.

16290322997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742487.

The product of its (nonzero) digits is 734832, while the sum is 50.

The spelling of 16290322997 in words is "sixteen billion, two hundred ninety million, three hundred twenty-two thousand, nine hundred ninety-seven".