78424027860 has 48 divisors (see below), whose sum is σ = 220422254976. Its totient is φ = 20833552512.

The previous prime is 78424027807. The next prime is 78424027879. The reversal of 78424027860 is 6872042487.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2469139 + ... + 2500698.

It is an arithmetic number, because the mean of its divisors is an integer number (4592130312).

Almost surely, 2^78424027860 is an apocalyptic number.

It is an amenable number.

78424027860 is an abundant number, since it is smaller than the sum of its proper divisors (141998227116).

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

78424027860 is a wasteful number, since it uses less digits than its factorization.

78424027860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4970112 (or 4970110 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 48.

The spelling of 78424027860 in words is "seventy-eight billion, four hundred twenty-four million, twenty-seven thousand, eight hundred sixty".