61916460125217 has 16 divisors (see below), whose sum is σ = 82735528125312. Its totient is φ = 41187596257280.

The previous prime is 61916460125213. The next prime is 61916460125243. The reversal of 61916460125217 is 71252106461916.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 61916460125217 - 2² = 61916460125213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61916460125217.

It is not an unprimeable number, because it can be changed into a prime (61916460125213) 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, 6927738 + ... + 13108259.

It is an arithmetic number, because the mean of its divisors is an integer number (5170970507832).

Almost surely, 2^{61916460125217} is an apocalyptic number.

It is an amenable number.

61916460125217 is a deficient number, since it is larger than the sum of its proper divisors (20819068000095).

61916460125217 is a wasteful number, since it uses less digits than its factorization.

61916460125217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20038248.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 61916460125217 in words is "sixty-one trillion, nine hundred sixteen billion, four hundred sixty million, one hundred twenty-five thousand, two hundred seventeen".