40027810687 has 4 divisors (see below), whose sum is σ = 40058865360. Its totient is φ = 39996756016.

The previous prime is 40027810681. The next prime is 40027810721. The reversal of 40027810687 is 78601872004.

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 40027810687 - 2¹⁵ = 40027777919 is a prime.

It is a super-2 number, since 2×40027810687² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40027810681) 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, 15525403 + ... + 15527980.

It is an arithmetic number, because the mean of its divisors is an integer number (10014716340).

Almost surely, 2^40027810687 is an apocalyptic number.

40027810687 is a deficient number, since it is larger than the sum of its proper divisors (31054673).

40027810687 is a wasteful number, since it uses less digits than its factorization.

40027810687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31054672.

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 40027810687 in words is "forty billion, twenty-seven million, eight hundred ten thousand, six hundred eighty-seven".