78341407836 has 24 divisors (see below), whose sum is σ = 193549361040. Its totient is φ = 24577696512.

The previous prime is 78341407817. The next prime is 78341407843. The reversal of 78341407836 is 63870414387.

It is a happy number.

It is a super-2 number, since 2×78341407836² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192013051 + ... + 192013458.

It is an arithmetic number, because the mean of its divisors is an integer number (8064556710).

Almost surely, 2^78341407836 is an apocalyptic number.

It is an amenable number.

78341407836 is an abundant number, since it is smaller than the sum of its proper divisors (115207953204).

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

78341407836 is a wasteful number, since it uses less digits than its factorization.

78341407836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384026533 (or 384026531 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 51.

The spelling of 78341407836 in words is "seventy-eight billion, three hundred forty-one million, four hundred seven thousand, eight hundred thirty-six".