40869878507 has 4 divisors (see below), whose sum is σ = 41974469856. Its totient is φ = 39765287160.

The previous prime is 40869878479. The next prime is 40869878519. The reversal of 40869878507 is 70587896804.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40869878507 - 2⁸ = 40869878251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40869878507.

It is not an unprimeable number, because it can be changed into a prime (40869878527) 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, 552295619 + ... + 552295692.

It is an arithmetic number, because the mean of its divisors is an integer number (10493617464).

Almost surely, 2^40869878507 is an apocalyptic number.

40869878507 is a deficient number, since it is larger than the sum of its proper divisors (1104591349).

40869878507 is a wasteful number, since it uses less digits than its factorization.

40869878507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104591348.

The product of its (nonzero) digits is 27095040, while the sum is 62.

Adding to 40869878507 its sum of digits (62), we get a square (40869878569 = 202163²).

The spelling of 40869878507 in words is "forty billion, eight hundred sixty-nine million, eight hundred seventy-eight thousand, five hundred seven".