40830266172 has 72 divisors (see below), whose sum is σ = 100042991104. Its totient is φ = 12959518176.

The previous prime is 40830266123. The next prime is 40830266207. The reversal of 40830266172 is 27166203804.

It is a happy number.

It is a super-2 number, since 2×40830266172² (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 40830266172.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1401183 + ... + 1430025.

Almost surely, 2^40830266172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40830266172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50021495552).

40830266172 is an abundant number, since it is smaller than the sum of its proper divisors (59212724932).

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

40830266172 is a wasteful number, since it uses less digits than its factorization.

40830266172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29119 (or 29094 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

Adding to 40830266172 its reverse (27166203804), we get a palindrome (67996469976).

It can be divided in two parts, 408302 and 66172, that added together give a palindrome (474474).

The spelling of 40830266172 in words is "forty billion, eight hundred thirty million, two hundred sixty-six thousand, one hundred seventy-two".