78501741367664 has 10 divisors (see below), whose sum is σ = 152097123899880. Its totient is φ = 39250870683824.

The previous prime is 78501741367619. The next prime is 78501741367667. The reversal of 78501741367664 is 46676314710587.

It is a self number, because there is not a number n which added to its sum of digits gives 78501741367664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78501741367667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2453179417724 + ... + 2453179417755.

It is an arithmetic number, because the mean of its divisors is an integer number (15209712389988).

Almost surely, 2^{78501741367664} is an apocalyptic number.

It is an amenable number.

78501741367664 is a deficient number, since it is larger than the sum of its proper divisors (73595382532216).

78501741367664 is a wasteful number, since it uses less digits than its factorization.

78501741367664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4906358835487 (or 4906358835481 counting only the distinct ones).

The product of its (nonzero) digits is 142248960, while the sum is 65.

The spelling of 78501741367664 in words is "seventy-eight trillion, five hundred one billion, seven hundred forty-one million, three hundred sixty-seven thousand, six hundred sixty-four".