40187494536 has 32 divisors (see below), whose sum is σ = 114821413440. Its totient is φ = 11482141248.

The previous prime is 40187494531. The next prime is 40187494547. The reversal of 40187494536 is 63549478104.

It is a happy 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, 119605471 + ... + 119605806.

It is an arithmetic number, because the mean of its divisors is an integer number (3588169170).

Almost surely, 2^40187494536 is an apocalyptic number.

It is an amenable number.

40187494536 is an abundant number, since it is smaller than the sum of its proper divisors (74633918904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40187494536 is a wasteful number, since it uses less digits than its factorization.

40187494536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239211293 (or 239211289 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 40187494536 in words is "forty billion, one hundred eighty-seven million, four hundred ninety-four thousand, five hundred thirty-six".