78532371620 has 48 divisors (see below), whose sum is σ = 173611347840. Its totient is φ = 29781244416.

The previous prime is 78532371613. The next prime is 78532371707. The reversal of 78532371620 is 2617323587.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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, 703430 + ... + 807389.

It is an arithmetic number, because the mean of its divisors is an integer number (3616903080).

Almost surely, 2^78532371620 is an apocalyptic number.

It is an amenable number.

78532371620 is an abundant number, since it is smaller than the sum of its proper divisors (95078976220).

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

78532371620 is a wasteful number, since it uses less digits than its factorization.

78532371620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510964 (or 1510962 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 78532371620 in words is "seventy-eight billion, five hundred thirty-two million, three hundred seventy-one thousand, six hundred twenty".