191413600061 has 4 divisors (see below), whose sum is σ = 202673223612. Its totient is φ = 180153976512.

The previous prime is 191413600039. The next prime is 191413600123. The reversal of 191413600061 is 160006314191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160006314191 = 61 ⋅2623054331.

It can be written as a sum of positive squares in 2 ways, for example, as 120673559161 + 70740040900 = 347381^2 + 265970^2 .

It is not a de Polignac number, because 191413600061 - 2⁶ = 191413599997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191413600661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5629811750 + ... + 5629811783.

It is an arithmetic number, because the mean of its divisors is an integer number (50668305903).

Almost surely, 2^191413600061 is an apocalyptic number.

It is an amenable number.

191413600061 is a deficient number, since it is larger than the sum of its proper divisors (11259623551).

191413600061 is a wasteful number, since it uses less digits than its factorization.

191413600061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11259623550.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 191413600061 in words is "one hundred ninety-one billion, four hundred thirteen million, six hundred thousand, sixty-one".