20198172395 has 32 divisors (see below), whose sum is σ = 25977888000. Its totient is φ = 15030092160.

The previous prime is 20198172367. The next prime is 20198172431. The reversal of 20198172395 is 59327189102.

It is a happy number.

It is not a de Polignac number, because 20198172395 - 2⁶ = 20198172331 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5990060 + ... + 5993430.

It is an arithmetic number, because the mean of its divisors is an integer number (811809000).

Almost surely, 2^20198172395 is an apocalyptic number.

20198172395 is a deficient number, since it is larger than the sum of its proper divisors (5779715605).

20198172395 is a wasteful number, since it uses less digits than its factorization.

20198172395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4523.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 20198172395 in words is "twenty billion, one hundred ninety-eight million, one hundred seventy-two thousand, three hundred ninety-five".