43746448491 has 48 divisors (see below), whose sum is σ = 66289152384. Its totient is φ = 28827529344.

The previous prime is 43746448399. The next prime is 43746448513. The reversal of 43746448491 is 19484464734.

It is a happy number.

43746448491 is a `hidden beast` number, since 4 + 3 + 74 + 6 + 4 + 484 + 91 = 666.

It is not a de Polignac number, because 43746448491 - 2²² = 43742254187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43746443491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13596915 + ... + 13600131.

It is an arithmetic number, because the mean of its divisors is an integer number (1381024008).

Almost surely, 2^43746448491 is an apocalyptic number.

43746448491 is a deficient number, since it is larger than the sum of its proper divisors (22542703893).

43746448491 is a wasteful number, since it uses less digits than its factorization.

43746448491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862 (or 3850 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 54.

The spelling of 43746448491 in words is "forty-three billion, seven hundred forty-six million, four hundred forty-eight thousand, four hundred ninety-one".