61713020827 has 4 divisors (see below), whose sum is σ = 62279195440. Its totient is φ = 61146846216.

The previous prime is 61713020767. The next prime is 61713020857. The reversal of 61713020827 is 72802031716.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61713020827 - 2³⁵ = 27353282459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61713020857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283087143 + ... + 283087360.

It is an arithmetic number, because the mean of its divisors is an integer number (15569798860).

Almost surely, 2^61713020827 is an apocalyptic number.

61713020827 is a deficient number, since it is larger than the sum of its proper divisors (566174613).

61713020827 is a wasteful number, since it uses less digits than its factorization.

61713020827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566174612.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 61713020827 in words is "sixty-one billion, seven hundred thirteen million, twenty thousand, eight hundred twenty-seven".