61439713735 has 8 divisors (see below), whose sum is σ = 73729264896. Its totient is φ = 49150698720.

The previous prime is 61439713733. The next prime is 61439713739. The reversal of 61439713735 is 53731793416.

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

It is not a de Polignac number, because 61439713735 - 2¹ = 61439713733 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 (61439713733) 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 7 ways as a sum of consecutive naturals, for example, 188745 + ... + 398125.

It is an arithmetic number, because the mean of its divisors is an integer number (9216158112).

Almost surely, 2^61439713735 is an apocalyptic number.

61439713735 is a deficient number, since it is larger than the sum of its proper divisors (12289551161).

61439713735 is a wasteful number, since it uses less digits than its factorization.

61439713735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268073.

The product of its digits is 1428840, while the sum is 49.

The spelling of 61439713735 in words is "sixty-one billion, four hundred thirty-nine million, seven hundred thirteen thousand, seven hundred thirty-five".