61239395943 has 24 divisors (see below), whose sum is σ = 96857214480. Its totient is φ = 36976796160.

The previous prime is 61239395939. The next prime is 61239395977. The reversal of 61239395943 is 34959393216.

61239395943 is a `hidden beast` number, since 6 + 12 + 3 + 9 + 39 + 594 + 3 = 666.

It is not a de Polignac number, because 61239395943 - 2² = 61239395939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61239395943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61239395983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1123146 + ... + 1176407.

It is an arithmetic number, because the mean of its divisors is an integer number (4035717270).

Almost surely, 2^61239395943 is an apocalyptic number.

61239395943 is a deficient number, since it is larger than the sum of its proper divisors (35617818537).

61239395943 is a wasteful number, since it uses less digits than its factorization.

61239395943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299839 (or 2299836 counting only the distinct ones).

The product of its digits is 4723920, while the sum is 54.

The spelling of 61239395943 in words is "sixty-one billion, two hundred thirty-nine million, three hundred ninety-five thousand, nine hundred forty-three".