78506346902 has 8 divisors (see below), whose sum is σ = 124686551016. Its totient is φ = 36944163232.

The previous prime is 78506346899. The next prime is 78506346911. The reversal of 78506346902 is 20964360587.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154505068 + ... + 1154505135.

It is an arithmetic number, because the mean of its divisors is an integer number (15585818877).

Almost surely, 2^78506346902 is an apocalyptic number.

78506346902 is a deficient number, since it is larger than the sum of its proper divisors (46180204114).

78506346902 is a wasteful number, since it uses less digits than its factorization.

78506346902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309010222.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 78506346902 in words is "seventy-eight billion, five hundred six million, three hundred forty-six thousand, nine hundred two".