19599928479 has 8 divisors (see below), whose sum is σ = 29036931120. Its totient is φ = 13066618968.

The previous prime is 19599928451. The next prime is 19599928499. The reversal of 19599928479 is 97482999591.

19599928479 is a `hidden beast` number, since 1 + 9 + 599 + 9 + 28 + 4 + 7 + 9 = 666.

It is not a de Polignac number, because 19599928479 - 2⁹ = 19599927967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19599928409) 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, 362961612 + ... + 362961665.

It is an arithmetic number, because the mean of its divisors is an integer number (3629616390).

Almost surely, 2^19599928479 is an apocalyptic number.

19599928479 is a deficient number, since it is larger than the sum of its proper divisors (9437002641).

19599928479 is an equidigital number, since it uses as much as digits as its factorization.

19599928479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725923286 (or 725923280 counting only the distinct ones).

The product of its digits is 132269760, while the sum is 72.

The spelling of 19599928479 in words is "nineteen billion, five hundred ninety-nine million, nine hundred twenty-eight thousand, four hundred seventy-nine".