43807672909 has 128 divisors (see below), whose sum is σ = 63376588800. Its totient is φ = 29796076800.

The previous prime is 43807672891. The next prime is 43807672949. The reversal of 43807672909 is 90927670834.

It is not a de Polignac number, because 43807672909 - 2⁵ = 43807672877 is a prime.

It is a super-2 number, since 2×43807672909² (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 43807672909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43807672949) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 71464087 + ... + 71464699.

It is an arithmetic number, because the mean of its divisors is an integer number (495129600).

Almost surely, 2^43807672909 is an apocalyptic number.

43807672909 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

43807672909 is a deficient number, since it is larger than the sum of its proper divisors (19568915891).

43807672909 is a wasteful number, since it uses less digits than its factorization.

43807672909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 55.

The spelling of 43807672909 in words is "forty-three billion, eight hundred seven million, six hundred seventy-two thousand, nine hundred nine".