61439713934 has 4 divisors (see below), whose sum is σ = 92159570904. Its totient is φ = 30719856966.

The previous prime is 61439713921. The next prime is 61439713943. The reversal of 61439713934 is 43931793416.

61439713934 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15359928482 + ... + 15359928485.

It is an arithmetic number, because the mean of its divisors is an integer number (23039892726).

Almost surely, 2^61439713934 is an apocalyptic number.

61439713934 is a deficient number, since it is larger than the sum of its proper divisors (30719856970).

61439713934 is a wasteful number, since it uses less digits than its factorization.

61439713934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30719856969.

The product of its digits is 1469664, while the sum is 50.

The spelling of 61439713934 in words is "sixty-one billion, four hundred thirty-nine million, seven hundred thirteen thousand, nine hundred thirty-four".