43211240640 has 112 divisors (see below), whose sum is σ = 152439684960. Its totient is φ = 11522995200.

The previous prime is 43211240621. The next prime is 43211240671. The reversal of 43211240640 is 4604211234.

It is a happy number.

43211240640 is a `hidden beast` number, since 4 + 3 + 2 + 1 + 12 + 4 + 0 + 640 = 666.

It is a super-2 number, since 2×43211240640² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2492011 + ... + 2509290.

Almost surely, 2^43211240640 is an apocalyptic number.

43211240640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43211240640 is an abundant number, since it is smaller than the sum of its proper divisors (109228444320).

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

43211240640 is a wasteful number, since it uses less digits than its factorization.

43211240640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001327 (or 5001311 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 43211240640 its reverse (4604211234), we get a palindrome (47815451874).

The spelling of 43211240640 in words is "forty-three billion, two hundred eleven million, two hundred forty thousand, six hundred forty".