78954064500839 has 12 divisors (see below), whose sum is σ = 86885959771128. Its totient is φ = 71692276315440.

The previous prime is 78954064500833. The next prime is 78954064500869. The reversal of 78954064500839 is 93800546045987.

It is not a de Polignac number, because 78954064500839 - 2¹² = 78954064496743 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 (78954064500833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382377989 + ... + 382584414.

It is an arithmetic number, because the mean of its divisors is an integer number (7240496647594).

Almost surely, 2^{78954064500839} is an apocalyptic number.

78954064500839 is a deficient number, since it is larger than the sum of its proper divisors (7931895270289).

78954064500839 is a wasteful number, since it uses less digits than its factorization.

78954064500839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764963278 (or 764963267 counting only the distinct ones).

The product of its (nonzero) digits is 261273600, while the sum is 68.

The spelling of 78954064500839 in words is "seventy-eight trillion, nine hundred fifty-four billion, sixty-four million, five hundred thousand, eight hundred thirty-nine".