40887778671 has 40 divisors (see below), whose sum is σ = 61509653040. Its totient is φ = 27067105152.

The previous prime is 40887778601. The next prime is 40887778699. The reversal of 40887778671 is 17687778804.

40887778671 is a `hidden beast` number, since 408 + 87 + 7 + 7 + 86 + 71 = 666.

It is not a de Polignac number, because 40887778671 - 2¹¹ = 40887776623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40887778599 and 40887778608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40887778601) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7517565 + ... + 7523001.

It is an arithmetic number, because the mean of its divisors is an integer number (1537741326).

Almost surely, 2^40887778671 is an apocalyptic number.

40887778671 is a deficient number, since it is larger than the sum of its proper divisors (20621874369).

40887778671 is a wasteful number, since it uses less digits than its factorization.

40887778671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6085 (or 6076 counting only the distinct ones).

The product of its (nonzero) digits is 29503488, while the sum is 63.

The spelling of 40887778671 in words is "forty billion, eight hundred eighty-seven million, seven hundred seventy-eight thousand, six hundred seventy-one".