78437487422 has 8 divisors (see below), whose sum is σ = 134464264176. Its totient is φ = 33616066032.

The previous prime is 78437487383. The next prime is 78437487481. The reversal of 78437487422 is 22478473487.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2801338823 + ... + 2801338850.

It is an arithmetic number, because the mean of its divisors is an integer number (16808033022).

Almost surely, 2^78437487422 is an apocalyptic number.

78437487422 is a deficient number, since it is larger than the sum of its proper divisors (56026776754).

78437487422 is a wasteful number, since it uses less digits than its factorization.

78437487422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5602677682.

The product of its digits is 16859136, while the sum is 56.

The spelling of 78437487422 in words is "seventy-eight billion, four hundred thirty-seven million, four hundred eighty-seven thousand, four hundred twenty-two".