78852369545 has 8 divisors (see below), whose sum is σ = 94625589960. Its totient is φ = 63080064640.

The previous prime is 78852369529. The next prime is 78852369649. The reversal of 78852369545 is 54596325887.

It can be written as a sum of positive squares in 4 ways, for example, as 4804707856 + 74047661689 = 69316^2 + 272117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78852369545 - 2⁴ = 78852369529 is a prime.

It is a super-2 number, since 2×78852369545² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22466 + ... + 397755.

It is an arithmetic number, because the mean of its divisors is an integer number (11828198745).

Almost surely, 2^78852369545 is an apocalyptic number.

It is an amenable number.

78852369545 is a deficient number, since it is larger than the sum of its proper divisors (15773220415).

78852369545 is a wasteful number, since it uses less digits than its factorization.

78852369545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457755.

The product of its digits is 72576000, while the sum is 62.

The spelling of 78852369545 in words is "seventy-eight billion, eight hundred fifty-two million, three hundred sixty-nine thousand, five hundred forty-five".