78298390826 has 8 divisors (see below), whose sum is σ = 122554003104. Its totient is φ = 37447056460.

The previous prime is 78298390801. The next prime is 78298390853. The reversal of 78298390826 is 62809389287.

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

It is a super-2 number, since 2×78298390826² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 851069420 + ... + 851069511.

It is an arithmetic number, because the mean of its divisors is an integer number (15319250388).

Almost surely, 2^78298390826 is an apocalyptic number.

78298390826 is a deficient number, since it is larger than the sum of its proper divisors (44255612278).

78298390826 is a wasteful number, since it uses less digits than its factorization.

78298390826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702138956.

The product of its (nonzero) digits is 20901888, while the sum is 62.

The spelling of 78298390826 in words is "seventy-eight billion, two hundred ninety-eight million, three hundred ninety thousand, eight hundred twenty-six".