78695531423 has 8 divisors (see below), whose sum is σ = 80379374592. Its totient is φ = 77012082936.

The previous prime is 78695531413. The next prime is 78695531479. The reversal of 78695531423 is 32413559687.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 78695531423 - 2⁴ = 78695531407 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 (78695531413) by changing a digit.

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, 323486 + ... + 511892.

It is an arithmetic number, because the mean of its divisors is an integer number (10047421824).

Almost surely, 2^78695531423 is an apocalyptic number.

78695531423 is a deficient number, since it is larger than the sum of its proper divisors (1683843169).

78695531423 is a wasteful number, since it uses less digits than its factorization.

78695531423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197341.

The product of its digits is 5443200, while the sum is 53.

The spelling of 78695531423 in words is "seventy-eight billion, six hundred ninety-five million, five hundred thirty-one thousand, four hundred twenty-three".