61416978117 has 8 divisors (see below), whose sum is σ = 89333786400. Its totient is φ = 37222410960.

The previous prime is 61416978113. The next prime is 61416978163. The reversal of 61416978117 is 71187961416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61416978117 - 2² = 61416978113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61416978117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61416978113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930560242 + ... + 930560307.

It is an arithmetic number, because the mean of its divisors is an integer number (11166723300).

Almost surely, 2^61416978117 is an apocalyptic number.

It is an amenable number.

61416978117 is a deficient number, since it is larger than the sum of its proper divisors (27916808283).

61416978117 is a wasteful number, since it uses less digits than its factorization.

61416978117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861120563.

The product of its digits is 508032, while the sum is 51.

The spelling of 61416978117 in words is "sixty-one billion, four hundred sixteen million, nine hundred seventy-eight thousand, one hundred seventeen".