78593831261 has 8 divisors (see below), whose sum is σ = 86072341824. Its totient is φ = 71170923520.

The previous prime is 78593831221. The next prime is 78593831291. The reversal of 78593831261 is 16213839587.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78593831261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78593831201) 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, 13897745 + ... + 13903398.

It is an arithmetic number, because the mean of its divisors is an integer number (10759042728).

Almost surely, 2^78593831261 is an apocalyptic number.

It is an amenable number.

78593831261 is a deficient number, since it is larger than the sum of its proper divisors (7478510563).

78593831261 is a wasteful number, since it uses less digits than its factorization.

78593831261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27801411.

The product of its digits is 2177280, while the sum is 53.

The spelling of 78593831261 in words is "seventy-eight billion, five hundred ninety-three million, eight hundred thirty-one thousand, two hundred sixty-one".