40134026466 has 48 divisors (see below), whose sum is σ = 89410381944. Its totient is φ = 13001409792.

The previous prime is 40134026461. The next prime is 40134026473. The reversal of 40134026466 is 66462043104.

40134026466 is a `hidden beast` number, since 4 + 0 + 1 + 3 + 4 + 0 + 2 + 646 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 40108473441 + 25553025 = 200271^2 + 5055^2 .

It is a super-2 number, since 2×40134026466² (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 40134026466.

It is not an unprimeable number, because it can be changed into a prime (40134026461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 549726 + ... + 618438.

Almost surely, 2^40134026466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40134026466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44705190972).

40134026466 is an abundant number, since it is smaller than the sum of its proper divisors (49276355478).

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

40134026466 is a wasteful number, since it uses less digits than its factorization.

40134026466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69635 (or 69632 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 40134026466 in words is "forty billion, one hundred thirty-four million, twenty-six thousand, four hundred sixty-six".