39766806139478 has 8 divisors (see below), whose sum is σ = 65072955501000. Its totient is φ = 18075820972480.

The previous prime is 39766806139477. The next prime is 39766806139481. The reversal of 39766806139478 is 87493160866793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×39766806139478² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39766806139399 and 39766806139408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39766806139477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903791048603 + ... + 903791048646.

It is an arithmetic number, because the mean of its divisors is an integer number (8134119437625).

Almost surely, 2^{39766806139478} is an apocalyptic number.

39766806139478 is a deficient number, since it is larger than the sum of its proper divisors (25306149361522).

39766806139478 is a wasteful number, since it uses less digits than its factorization.

39766806139478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807582097262.

The product of its (nonzero) digits is 1975228416, while the sum is 77.

The spelling of 39766806139478 in words is "thirty-nine trillion, seven hundred sixty-six billion, eight hundred six million, one hundred thirty-nine thousand, four hundred seventy-eight".