39980678481 has 12 divisors (see below), whose sum is σ = 58310548608. Its totient is φ = 26395010424.

The previous prime is 39980678473. The next prime is 39980678483. The reversal of 39980678481 is 18487608993.

39980678481 is a `hidden beast` number, since 3 + 9 + 9 + 80 + 6 + 78 + 481 = 666.

It is not a de Polignac number, because 39980678481 - 2³ = 39980678473 is a prime.

It is a super-2 number, since 2×39980678481² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39980678483) 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 11 ways as a sum of consecutive naturals, for example, 21563625 + ... + 21565478.

It is an arithmetic number, because the mean of its divisors is an integer number (4859212384).

Almost surely, 2^39980678481 is an apocalyptic number.

It is an amenable number.

39980678481 is a deficient number, since it is larger than the sum of its proper divisors (18329870127).

39980678481 is a wasteful number, since it uses less digits than its factorization.

39980678481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43129212 (or 43129209 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 39980678481 in words is "thirty-nine billion, nine hundred eighty million, six hundred seventy-eight thousand, four hundred eighty-one".