16197520739 has 8 divisors (see below), whose sum is σ = 16721802240. Its totient is φ = 15673350600.

The previous prime is 16197520733. The next prime is 16197520751. The reversal of 16197520739 is 93702579161.

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 16197520739 - 2⁴ = 16197520723 is a prime.

It is a super-2 number, since 2×16197520739² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16197520733) 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, 348884 + ... + 392574.

It is an arithmetic number, because the mean of its divisors is an integer number (2090225280).

Almost surely, 2^16197520739 is an apocalyptic number.

16197520739 is a deficient number, since it is larger than the sum of its proper divisors (524281501).

16197520739 is a wasteful number, since it uses less digits than its factorization.

16197520739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55681.

The product of its (nonzero) digits is 714420, while the sum is 50.

The spelling of 16197520739 in words is "sixteen billion, one hundred ninety-seven million, five hundred twenty thousand, seven hundred thirty-nine".