78393668741 has 8 divisors (see below), whose sum is σ = 80345727168. Its totient is φ = 76443516000.

The previous prime is 78393668723. The next prime is 78393668747. The reversal of 78393668741 is 14786639387.

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

It is not a de Polignac number, because 78393668741 - 2³⁰ = 77319926917 is a prime.

It is a super-2 number, since 2×78393668741² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78393668747) 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, 392945 + ... + 557846.

It is an arithmetic number, because the mean of its divisors is an integer number (10043215896).

Almost surely, 2^78393668741 is an apocalyptic number.

It is an amenable number.

78393668741 is a deficient number, since it is larger than the sum of its proper divisors (1952058427).

78393668741 is a wasteful number, since it uses less digits than its factorization.

78393668741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952843.

The product of its digits is 36578304, while the sum is 62.

The spelling of 78393668741 in words is "seventy-eight billion, three hundred ninety-three million, six hundred sixty-eight thousand, seven hundred forty-one".