16197569690 has 8 divisors (see below), whose sum is σ = 29155625460. Its totient is φ = 6479027872.

The previous prime is 16197569671. The next prime is 16197569699. The reversal of 16197569690 is 9696579161.

It can be written as a sum of positive squares in 2 ways, for example, as 15333621241 + 863948449 = 123829^2 + 29393^2 .

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

It is a super-2 number, since 2×16197569690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16197569699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809878475 + ... + 809878494.

Almost surely, 2^16197569690 is an apocalyptic number.

16197569690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16197569690 is a deficient number, since it is larger than the sum of its proper divisors (12958055770).

16197569690 is a wasteful number, since it uses less digits than its factorization.

16197569690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619756976.

The product of its (nonzero) digits is 5511240, while the sum is 59.

The spelling of 16197569690 in words is "sixteen billion, one hundred ninety-seven million, five hundred sixty-nine thousand, six hundred ninety".