61339871934 has 48 divisors (see below), whose sum is σ = 145016851824. Its totient is φ = 18583776000.

The previous prime is 61339871893. The next prime is 61339871941. The reversal of 61339871934 is 43917893316.

It is a happy number.

61339871934 is a `hidden beast` number, since 61 + 3 + 398 + 7 + 193 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 945334 + ... + 1008134.

It is an arithmetic number, because the mean of its divisors is an integer number (3021184413).

Almost surely, 2^61339871934 is an apocalyptic number.

61339871934 is an abundant number, since it is smaller than the sum of its proper divisors (83676979890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61339871934 is a wasteful number, since it uses less digits than its factorization.

61339871934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67753 (or 67750 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The spelling of 61339871934 in words is "sixty-one billion, three hundred thirty-nine million, eight hundred seventy-one thousand, nine hundred thirty-four".