78535253580 has 96 divisors (see below), whose sum is σ = 251384394240. Its totient is φ = 17945802240.

The previous prime is 78535253579. The next prime is 78535253603. The reversal of 78535253580 is 8535253587.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1562440 + ... + 1611920.

It is an arithmetic number, because the mean of its divisors is an integer number (2618587440).

Almost surely, 2^78535253580 is an apocalyptic number.

78535253580 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78535253580 is an abundant number, since it is smaller than the sum of its proper divisors (172849140660).

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

78535253580 is a wasteful number, since it uses less digits than its factorization.

78535253580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53279 (or 53277 counting only the distinct ones).

The product of its (nonzero) digits is 5040000, while the sum is 51.

The spelling of 78535253580 in words is "seventy-eight billion, five hundred thirty-five million, two hundred fifty-three thousand, five hundred eighty".