78341407837 has 32 divisors (see below), whose sum is σ = 98423043840. Its totient is φ = 60577735680.

The previous prime is 78341407817. The next prime is 78341407843. The reversal of 78341407837 is 73870414387.

It is a happy number.

It is not a de Polignac number, because 78341407837 - 2⁷ = 78341407709 is a prime.

It is a super-2 number, since 2×78341407837² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78341407817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6015589 + ... + 6028597.

It is an arithmetic number, because the mean of its divisors is an integer number (3075720120).

Almost surely, 2^78341407837 is an apocalyptic number.

78341407837 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

78341407837 is a deficient number, since it is larger than the sum of its proper divisors (20081636003).

78341407837 is a wasteful number, since it uses less digits than its factorization.

78341407837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13621.

The product of its (nonzero) digits is 3161088, while the sum is 52.

The spelling of 78341407837 in words is "seventy-eight billion, three hundred forty-one million, four hundred seven thousand, eight hundred thirty-seven".