19497972524 has 24 divisors (see below), whose sum is σ = 34429164000. Its totient is φ = 9661368960.

The previous prime is 19497972523. The next prime is 19497972581. The reversal of 19497972524 is 42527979491.

It is not an unprimeable number, because it can be changed into a prime (19497972523) 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, 224384 + ... + 298904.

It is an arithmetic number, because the mean of its divisors is an integer number (1434548500).

Almost surely, 2^19497972524 is an apocalyptic number.

It is an amenable number.

19497972524 is a deficient number, since it is larger than the sum of its proper divisors (14931191476).

19497972524 is a wasteful number, since it uses less digits than its factorization.

19497972524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75113 (or 75111 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 59.

The spelling of 19497972524 in words is "nineteen billion, four hundred ninety-seven million, nine hundred seventy-two thousand, five hundred twenty-four".