43166634440 has 32 divisors (see below), whose sum is σ = 97486011000. Its totient is φ = 17202461184.

The previous prime is 43166634419. The next prime is 43166634461. The reversal of 43166634440 is 4443666134.

It is an interprime number because it is at equal distance from previous prime (43166634419) and next prime (43166634461).

It can be written as a sum of positive squares in 4 ways, for example, as 32176466884 + 10990167556 = 179378^2 + 104834^2 .

It is a super-2 number, since 2×43166634440² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1995125 + ... + 2016644.

Almost surely, 2^43166634440 is an apocalyptic number.

43166634440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43166634440 is an abundant number, since it is smaller than the sum of its proper divisors (54319376560).

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

43166634440 is a wasteful number, since it uses less digits than its factorization.

43166634440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012049 (or 4012045 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 41.

The spelling of 43166634440 in words is "forty-three billion, one hundred sixty-six million, six hundred thirty-four thousand, four hundred forty".