78810536346 has 16 divisors (see below), whose sum is σ = 162705623808. Its totient is φ = 25422753600.

The previous prime is 78810536339. The next prime is 78810536407. The reversal of 78810536346 is 64363501887.

It is a super-2 number, since 2×78810536346² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211856095 + ... + 211856466.

It is an arithmetic number, because the mean of its divisors is an integer number (10169101488).

Almost surely, 2^78810536346 is an apocalyptic number.

78810536346 is an abundant number, since it is smaller than the sum of its proper divisors (83895087462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78810536346 is a wasteful number, since it uses less digits than its factorization.

78810536346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423712597.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 78810536346 in words is "seventy-eight billion, eight hundred ten million, five hundred thirty-six thousand, three hundred forty-six".