78487258645 has 8 divisors (see below), whose sum is σ = 94386393504. Its totient is φ = 62655351504.

The previous prime is 78487258627. The next prime is 78487258687. The reversal of 78487258645 is 54685278487.

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 78487258645 - 2¹⁵ = 78487225877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16804359 + ... + 16809028.

It is an arithmetic number, because the mean of its divisors is an integer number (11798299188).

Almost surely, 2^78487258645 is an apocalyptic number.

It is an amenable number.

78487258645 is a deficient number, since it is larger than the sum of its proper divisors (15899134859).

78487258645 is a wasteful number, since it uses less digits than its factorization.

78487258645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33613859.

The product of its digits is 120422400, while the sum is 64.

The spelling of 78487258645 in words is "seventy-eight billion, four hundred eighty-seven million, two hundred fifty-eight thousand, six hundred forty-five".