19697096523 has 54 divisors (see below), whose sum is σ = 29838727548. Its totient is φ = 11551494240.

The previous prime is 19697096521. The next prime is 19697096527. The reversal of 19697096523 is 32569079691.

It is not a de Polignac number, because 19697096523 - 2¹ = 19697096521 is a prime.

It is a super-2 number, since 2×19697096523² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19697096521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 72682878 + ... + 72683148.

Almost surely, 2^19697096523 is an apocalyptic number.

19697096523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

19697096523 is a deficient number, since it is larger than the sum of its proper divisors (10141631025).

19697096523 is an equidigital number, since it uses as much as digits as its factorization.

19697096523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 5511240, while the sum is 57.

The spelling of 19697096523 in words is "nineteen billion, six hundred ninety-seven million, ninety-six thousand, five hundred twenty-three".