40078852686 has 12 divisors (see below), whose sum is σ = 86837514192. Its totient is φ = 13359617556.

The previous prime is 40078852679. The next prime is 40078852691. The reversal of 40078852686 is 68625887004.

40078852686 is a `hidden beast` number, since 40 + 0 + 78 + 8 + 526 + 8 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1113301446 + ... + 1113301481.

It is an arithmetic number, because the mean of its divisors is an integer number (7236459516).

Almost surely, 2^40078852686 is an apocalyptic number.

40078852686 is an abundant number, since it is smaller than the sum of its proper divisors (46758661506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40078852686 is a wasteful number, since it uses less digits than its factorization.

40078852686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226602935 (or 2226602932 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 40078852686 in words is "forty billion, seventy-eight million, eight hundred fifty-two thousand, six hundred eighty-six".