78292589506 has 16 divisors (see below), whose sum is σ = 118841456160. Its totient is φ = 38680076160.

The previous prime is 78292589503. The next prime is 78292589527. The reversal of 78292589506 is 60598529287.

It is a super-2 number, since 2×78292589506² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78292589503) 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 7 ways as a sum of consecutive naturals, for example, 205900 + ... + 446071.

It is an arithmetic number, because the mean of its divisors is an integer number (7427591010).

Almost surely, 2^78292589506 is an apocalyptic number.

78292589506 is a deficient number, since it is larger than the sum of its proper divisors (40548866654).

78292589506 is a wasteful number, since it uses less digits than its factorization.

78292589506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652689.

The product of its (nonzero) digits is 21772800, while the sum is 61.

The spelling of 78292589506 in words is "seventy-eight billion, two hundred ninety-two million, five hundred eighty-nine thousand, five hundred six".