78491138037 has 16 divisors (see below), whose sum is σ = 114249135168. Its totient is φ = 47640562560.

The previous prime is 78491138027. The next prime is 78491138069. The reversal of 78491138037 is 73083119487.

It is not a de Polignac number, because 78491138037 - 2¹⁸ = 78490875893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78491138027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13782039 + ... + 13787732.

It is an arithmetic number, because the mean of its divisors is an integer number (7140570948).

Almost surely, 2^78491138037 is an apocalyptic number.

It is an amenable number.

78491138037 is a deficient number, since it is larger than the sum of its proper divisors (35757997131).

78491138037 is a wasteful number, since it uses less digits than its factorization.

78491138037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27569860.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 78491138037 in words is "seventy-eight billion, four hundred ninety-one million, one hundred thirty-eight thousand, thirty-seven".