78749225431423 has 16 divisors (see below), whose sum is σ = 83458394997120. Its totient is φ = 74048627575296.

The previous prime is 78749225431361. The next prime is 78749225431427. The reversal of 78749225431423 is 32413452294787.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78749225431423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78749225431427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79951165 + ... + 80930137.

It is an arithmetic number, because the mean of its divisors is an integer number (5216149687320).

Almost surely, 2^{78749225431423} is an apocalyptic number.

78749225431423 is a deficient number, since it is larger than the sum of its proper divisors (4709169565697).

78749225431423 is a wasteful number, since it uses less digits than its factorization.

78749225431423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983346.

The product of its digits is 81285120, while the sum is 61.

The spelling of 78749225431423 in words is "seventy-eight trillion, seven hundred forty-nine billion, two hundred twenty-five million, four hundred thirty-one thousand, four hundred twenty-three".