20290704195 has 128 divisors (see below), whose sum is σ = 37334753280. Its totient is φ = 9354240000.

The previous prime is 20290704191. The next prime is 20290704199. The reversal of 20290704195 is 59140709202.

It is an interprime number because it is at equal distance from previous prime (20290704191) and next prime (20290704199).

It is not a de Polignac number, because 20290704195 - 2² = 20290704191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20290704191) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13983220 + ... + 13984670.

It is an arithmetic number, because the mean of its divisors is an integer number (291677760).

Almost surely, 2^20290704195 is an apocalyptic number.

20290704195 is a deficient number, since it is larger than the sum of its proper divisors (17044049085).

20290704195 is a wasteful number, since it uses less digits than its factorization.

20290704195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597.

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 20290704195 in words is "twenty billion, two hundred ninety million, seven hundred four thousand, one hundred ninety-five".