78829142590 has 32 divisors (see below), whose sum is σ = 154807511040. Its totient is φ = 28662228000.

The previous prime is 78829142549. The next prime is 78829142597. The reversal of 78829142590 is 9524192887.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78829142597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1258515 + ... + 1319665.

It is an arithmetic number, because the mean of its divisors is an integer number (4837734720).

Almost surely, 2^78829142590 is an apocalyptic number.

78829142590 is a deficient number, since it is larger than the sum of its proper divisors (75978368450).

78829142590 is a wasteful number, since it uses less digits than its factorization.

78829142590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72888.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 78829142590 in words is "seventy-eight billion, eight hundred twenty-nine million, one hundred forty-two thousand, five hundred ninety".