61439713935 has 16 divisors (see below), whose sum is σ = 98325404160. Its totient is φ = 32760560160.

The previous prime is 61439713921. The next prime is 61439713943. The reversal of 61439713935 is 53931793416.

It is not a de Polignac number, because 61439713935 - 2⁵ = 61439713903 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 385411 + ... + 520980.

It is an arithmetic number, because the mean of its divisors is an integer number (6145337760).

Almost surely, 2^61439713935 is an apocalyptic number.

61439713935 is a deficient number, since it is larger than the sum of its proper divisors (36885690225).

61439713935 is a wasteful number, since it uses less digits than its factorization.

61439713935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910918.

The product of its digits is 1837080, while the sum is 51.

The spelling of 61439713935 in words is "sixty-one billion, four hundred thirty-nine million, seven hundred thirteen thousand, nine hundred thirty-five".