40187494537 has 8 divisors (see below), whose sum is σ = 41408096576. Its totient is φ = 38973969072.

The previous prime is 40187494531. The next prime is 40187494547. The reversal of 40187494537 is 73549478104.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40187494537 - 2²³ = 40179105929 is a prime.

It is a super-4 number, since 4×40187494537⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40187494531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1757613 + ... + 1780330.

It is an arithmetic number, because the mean of its divisors is an integer number (5176012072).

Almost surely, 2^40187494537 is an apocalyptic number.

It is an amenable number.

40187494537 is a deficient number, since it is larger than the sum of its proper divisors (1220602039).

40187494537 is a wasteful number, since it uses less digits than its factorization.

40187494537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538287.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 40187494537 in words is "forty billion, one hundred eighty-seven million, four hundred ninety-four thousand, five hundred thirty-seven".