61715190195727 has 8 divisors (see below), whose sum is σ = 65345571417600. Its totient is φ = 58084817409024.

The previous prime is 61715190195691. The next prime is 61715190195749. The reversal of 61715190195727 is 72759109151716.

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

It is a cyclic number.

It is not a de Polignac number, because 61715190195727 - 2²⁷ = 61715055977999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61715190195797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18980274 + ... + 21992752.

It is an arithmetic number, because the mean of its divisors is an integer number (8168196427200).

Almost surely, 2^{61715190195727} is an apocalyptic number.

61715190195727 is a deficient number, since it is larger than the sum of its proper divisors (3630381221873).

61715190195727 is a wasteful number, since it uses less digits than its factorization.

61715190195727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217585.

The product of its (nonzero) digits is 8334900, while the sum is 61.

The spelling of 61715190195727 in words is "sixty-one trillion, seven hundred fifteen billion, one hundred ninety million, one hundred ninety-five thousand, seven hundred twenty-seven".