61934619859 has 16 divisors (see below), whose sum is σ = 71628556032. Its totient is φ = 52455986208.

The previous prime is 61934619847. The next prime is 61934619869. The reversal of 61934619859 is 95891643916.

It is a cyclic number.

It is not a de Polignac number, because 61934619859 - 2³³ = 53344685267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61934619797 and 61934619806.

It is not an unprimeable number, because it can be changed into a prime (61934619809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40512 + ... + 354274.

It is an arithmetic number, because the mean of its divisors is an integer number (4476784752).

Almost surely, 2^61934619859 is an apocalyptic number.

61934619859 is a deficient number, since it is larger than the sum of its proper divisors (9693936173).

61934619859 is a wasteful number, since it uses less digits than its factorization.

61934619859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314106.

The product of its digits is 12597120, while the sum is 61.

The spelling of 61934619859 in words is "sixty-one billion, nine hundred thirty-four million, six hundred nineteen thousand, eight hundred fifty-nine".