78492866822 has 16 divisors (see below), whose sum is σ = 121551058944. Its totient is φ = 37976133000.

The previous prime is 78492866819. The next prime is 78492866827. The reversal of 78492866822 is 22866829487.

It is a super-2 number, since 2×78492866822² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78492866827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521747 + ... + 655137.

It is an arithmetic number, because the mean of its divisors is an integer number (7596941184).

Almost surely, 2^78492866822 is an apocalyptic number.

78492866822 is a deficient number, since it is larger than the sum of its proper divisors (43058192122).

78492866822 is a wasteful number, since it uses less digits than its factorization.

78492866822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142915.

The product of its digits is 37158912, while the sum is 62.

The spelling of 78492866822 in words is "seventy-eight billion, four hundred ninety-two million, eight hundred sixty-six thousand, eight hundred twenty-two".