78009959670 has 32 divisors (see below), whose sum is σ = 188048694528. Its totient is φ = 20711012448.

The previous prime is 78009959633. The next prime is 78009959723. The reversal of 78009959670 is 7695990087.

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, 5720794 + ... + 5734413.

It is an arithmetic number, because the mean of its divisors is an integer number (5876521704).

Almost surely, 2^78009959670 is an apocalyptic number.

78009959670 is an abundant number, since it is smaller than the sum of its proper divisors (110038734858).

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

78009959670 is a wasteful number, since it uses less digits than its factorization.

78009959670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11455444.

The product of its (nonzero) digits is 8573040, while the sum is 60.

The spelling of 78009959670 in words is "seventy-eight billion, nine million, nine hundred fifty-nine thousand, six hundred seventy".