40187387528 has 16 divisors (see below), whose sum is σ = 75425751180. Its totient is φ = 20073853888.

The previous prime is 40187387479. The next prime is 40187387543. The reversal of 40187387528 is 82578378104.

It can be written as a sum of positive squares in 2 ways, for example, as 28819136644 + 11368250884 = 169762^2 + 106622^2 .

It is a super-2 number, since 2×40187387528² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40187387528.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2471375 + ... + 2487582.

Almost surely, 2^40187387528 is an apocalyptic number.

It is an amenable number.

40187387528 is a deficient number, since it is larger than the sum of its proper divisors (35238363652).

40187387528 is a wasteful number, since it uses less digits than its factorization.

40187387528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4959976 (or 4959972 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 40187387528 in words is "forty billion, one hundred eighty-seven million, three hundred eighty-seven thousand, five hundred twenty-eight".