61712733727 has 8 divisors (see below), whose sum is σ = 61779271680. Its totient is φ = 61646231160.

The previous prime is 61712733703. The next prime is 61712733739. The reversal of 61712733727 is 72733721716.

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 61712733727 - 2²³ = 61704345119 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 (61712733227) 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, 4773402 + ... + 4786312.

It is an arithmetic number, because the mean of its divisors is an integer number (7722408960).

Almost surely, 2^61712733727 is an apocalyptic number.

61712733727 is a deficient number, since it is larger than the sum of its proper divisors (66537953).

61712733727 is a wasteful number, since it uses less digits than its factorization.

61712733727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17693.

The product of its digits is 518616, while the sum is 46.

The spelling of 61712733727 in words is "sixty-one billion, seven hundred twelve million, seven hundred thirty-three thousand, seven hundred twenty-seven".