40487066887 has 4 divisors (see below), whose sum is σ = 41581311976. Its totient is φ = 39392821800.

The previous prime is 40487066863. The next prime is 40487066891. The reversal of 40487066887 is 78866078404.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40487066887 is a prime.

It is a super-2 number, since 2×40487066887² (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 (40487066387) 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, 547122489 + ... + 547122562.

It is an arithmetic number, because the mean of its divisors is an integer number (10395327994).

Almost surely, 2^40487066887 is an apocalyptic number.

40487066887 is a deficient number, since it is larger than the sum of its proper divisors (1094245089).

40487066887 is a wasteful number, since it uses less digits than its factorization.

40487066887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094245088.

The product of its (nonzero) digits is 14450688, while the sum is 58.

The spelling of 40487066887 in words is "forty billion, four hundred eighty-seven million, sixty-six thousand, eight hundred eighty-seven".