61700711709 has 32 divisors (see below), whose sum is σ = 104518672384. Its totient is φ = 31495573440.

The previous prime is 61700711707. The next prime is 61700711729. The reversal of 61700711709 is 90711700716.

It is not a de Polignac number, because 61700711709 - 2¹ = 61700711707 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61700711707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3636859 + ... + 3653784.

It is an arithmetic number, because the mean of its divisors is an integer number (3266208512).

Almost surely, 2^61700711709 is an apocalyptic number.

It is an amenable number.

61700711709 is a deficient number, since it is larger than the sum of its proper divisors (42817960675).

61700711709 is a wasteful number, since it uses less digits than its factorization.

61700711709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7290697.

The product of its (nonzero) digits is 18522, while the sum is 39.

The spelling of 61700711709 in words is "sixty-one billion, seven hundred million, seven hundred eleven thousand, seven hundred nine".