78587645374 has 16 divisors (see below), whose sum is σ = 139367253600. Its totient is φ = 32519025504.

The previous prime is 78587645371. The next prime is 78587645393. The reversal of 78587645374 is 47354678587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78587645371) 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 7 ways as a sum of consecutive naturals, for example, 96782409 + ... + 96783220.

It is an arithmetic number, because the mean of its divisors is an integer number (8710453350).

Almost surely, 2^78587645374 is an apocalyptic number.

78587645374 is a deficient number, since it is larger than the sum of its proper divisors (60779608226).

78587645374 is a wasteful number, since it uses less digits than its factorization.

78587645374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193565667.

The product of its digits is 158054400, while the sum is 64.

The spelling of 78587645374 in words is "seventy-eight billion, five hundred eighty-seven million, six hundred forty-five thousand, three hundred seventy-four".