19497245881499 has 4 divisors (see below), whose sum is σ = 19497506256336. Its totient is φ = 19496985506664.

The previous prime is 19497245881483. The next prime is 19497245881601. The reversal of 19497245881499 is 99418854279491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19497245881499 - 2⁴ = 19497245881483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19497245887499) 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, 130075064 + ... + 130224869.

It is an arithmetic number, because the mean of its divisors is an integer number (4874376564084).

Almost surely, 2^{19497245881499} is an apocalyptic number.

19497245881499 is a deficient number, since it is larger than the sum of its proper divisors (260374837).

19497245881499 is an equidigital number, since it uses as much as digits as its factorization.

19497245881499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260374836.

The product of its digits is 1881169920, while the sum is 80.

The spelling of 19497245881499 in words is "nineteen trillion, four hundred ninety-seven billion, two hundred forty-five million, eight hundred eighty-one thousand, four hundred ninety-nine".