20198577794134 has 8 divisors (see below), whose sum is σ = 30319009659000. Its totient is φ = 10092241241136.

The previous prime is 20198577794071. The next prime is 20198577794221. The reversal of 20198577794134 is 43149777589102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20198577794134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3523824384 + ... + 3523830115.

It is an arithmetic number, because the mean of its divisors is an integer number (3789876207375).

Almost surely, 2^{20198577794134} is an apocalyptic number.

20198577794134 is a deficient number, since it is larger than the sum of its proper divisors (10120431864866).

20198577794134 is a wasteful number, since it uses less digits than its factorization.

20198577794134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7047655934.

The product of its (nonzero) digits is 106686720, while the sum is 67.

The spelling of 20198577794134 in words is "twenty trillion, one hundred ninety-eight billion, five hundred seventy-seven million, seven hundred ninety-four thousand, one hundred thirty-four".