40165252889 has 8 divisors (see below), whose sum is σ = 43263555072. Its totient is φ = 37179616320.

The previous prime is 40165252867. The next prime is 40165252891. The reversal of 40165252889 is 98825256104.

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 40165252889 - 2¹² = 40165248793 is a prime.

It is a super-2 number, since 2×40165252889² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40165252819) 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, 28165664 + ... + 28167089.

It is an arithmetic number, because the mean of its divisors is an integer number (5407944384).

Almost surely, 2^40165252889 is an apocalyptic number.

It is an amenable number.

40165252889 is a deficient number, since it is larger than the sum of its proper divisors (3098302183).

40165252889 is a wasteful number, since it uses less digits than its factorization.

40165252889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56332807.

The product of its (nonzero) digits is 1382400, while the sum is 50.

The spelling of 40165252889 in words is "forty billion, one hundred sixty-five million, two hundred fifty-two thousand, eight hundred eighty-nine".