78494642413 has 12 divisors (see below), whose sum is σ = 86394220864. Its totient is φ = 71263665000.

The previous prime is 78494642407. The next prime is 78494642431. The reversal of 78494642413 is 31424649487.

It is not a de Polignac number, because 78494642413 - 2⁵ = 78494642381 is a prime.

It is a super-2 number, since 2×78494642413² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78494648413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341031 + ... + 522772.

Almost surely, 2^78494642413 is an apocalyptic number.

It is an amenable number.

78494642413 is a deficient number, since it is larger than the sum of its proper divisors (7899578451).

78494642413 is a wasteful number, since it uses less digits than its factorization.

78494642413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864576 (or 864565 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 52.

The spelling of 78494642413 in words is "seventy-eight billion, four hundred ninety-four million, six hundred forty-two thousand, four hundred thirteen".