61607723814 has 144 divisors (see below), whose sum is σ = 167391544320. Its totient is φ = 16231622400.

The previous prime is 61607723803. The next prime is 61607723833. The reversal of 61607723814 is 41832770616.

61607723814 is a `hidden beast` number, since 6 + 1 + 607 + 7 + 2 + 38 + 1 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 61607723814.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14662914 + ... + 14667114.

It is an arithmetic number, because the mean of its divisors is an integer number (1162441280).

Almost surely, 2^61607723814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61607723814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83695772160).

61607723814 is an abundant number, since it is smaller than the sum of its proper divisors (105783820506).

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

61607723814 is a wasteful number, since it uses less digits than its factorization.

61607723814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5515 (or 5505 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 61607723814 in words is "sixty-one billion, six hundred seven million, seven hundred twenty-three thousand, eight hundred fourteen".