19435243995 has 12 divisors (see below), whose sum is σ = 33687756336. Its totient is φ = 10365463440.

The previous prime is 19435243979. The next prime is 19435244009. The reversal of 19435243995 is 59934253491.

19435243995 is a `hidden beast` number, since 1 + 94 + 35 + 2 + 439 + 95 = 666.

It is not a de Polignac number, because 19435243995 - 2⁴ = 19435243979 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215947111 + ... + 215947200.

It is an arithmetic number, because the mean of its divisors is an integer number (2807313028).

Almost surely, 2^19435243995 is an apocalyptic number.

19435243995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19435243995 is a deficient number, since it is larger than the sum of its proper divisors (14252512341).

19435243995 is a wasteful number, since it uses less digits than its factorization.

19435243995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431894322 (or 431894319 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 54.

The spelling of 19435243995 in words is "nineteen billion, four hundred thirty-five million, two hundred forty-three thousand, nine hundred ninety-five".