78247825353 has 12 divisors (see below), whose sum is σ = 113166459588. Its totient is φ = 52099760160.

The previous prime is 78247825277. The next prime is 78247825391. The reversal of 78247825353 is 35352874287.

78247825353 is a `hidden beast` number, since 7 + 8 + 24 + 7 + 82 + 535 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 40420298304 + 37827527049 = 201048^2 + 194493^2 .

It is not a de Polignac number, because 78247825353 - 2¹⁸ = 78247563209 is a prime.

It is a super-2 number, since 2×78247825353² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78247825353.

It is not an unprimeable number, because it can be changed into a prime (78247825393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5447158 + ... + 5461503.

It is an arithmetic number, because the mean of its divisors is an integer number (9430538299).

Almost surely, 2^78247825353 is an apocalyptic number.

It is an amenable number.

78247825353 is a deficient number, since it is larger than the sum of its proper divisors (34918634235).

78247825353 is a wasteful number, since it uses less digits than its factorization.

78247825353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10909464 (or 10909461 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 54.

The spelling of 78247825353 in words is "seventy-eight billion, two hundred forty-seven million, eight hundred twenty-five thousand, three hundred fifty-three".