78530340157885 has 96 divisors (see below), whose sum is σ = 122496559718400. Its totient is φ = 47252446348800.

The previous prime is 78530340157873. The next prime is 78530340157889. The reversal of 78530340157885 is 58875104303587.

It is not a de Polignac number, because 78530340157885 - 2¹³ = 78530340149693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78530340157889) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 439711236 + ... + 439889794.

It is an arithmetic number, because the mean of its divisors is an integer number (1276005830400).

Almost surely, 2^{78530340157885} is an apocalyptic number.

It is an amenable number.

78530340157885 is a deficient number, since it is larger than the sum of its proper divisors (43966219560515).

78530340157885 is a wasteful number, since it uses less digits than its factorization.

78530340157885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182203 (or 182192 counting only the distinct ones).

The product of its (nonzero) digits is 112896000, while the sum is 64.

The spelling of 78530340157885 in words is "seventy-eight trillion, five hundred thirty billion, three hundred forty million, one hundred fifty-seven thousand, eight hundred eighty-five".