61708688213 has 8 divisors (see below), whose sum is σ = 61820235360. Its totient is φ = 61597231920.

The previous prime is 61708688207. The next prime is 61708688219. The reversal of 61708688213 is 31288680716.

It is an interprime number because it is at equal distance from previous prime (61708688207) and next prime (61708688219).

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 61708688213 - 2³⁴ = 44528819029 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 (61708688219) 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 7 ways as a sum of consecutive naturals, for example, 1418378 + ... + 1461236.

It is an arithmetic number, because the mean of its divisors is an integer number (7727529420).

Almost surely, 2^61708688213 is an apocalyptic number.

It is an amenable number.

61708688213 is a deficient number, since it is larger than the sum of its proper divisors (111547147).

61708688213 is a wasteful number, since it uses less digits than its factorization.

61708688213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45427.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 61708688213 in words is "sixty-one billion, seven hundred eight million, six hundred eighty-eight thousand, two hundred thirteen".