43149400371 has 144 divisors (see below), whose sum is σ = 81736931328. Its totient is φ = 21287577600.

The previous prime is 43149400321. The next prime is 43149400373. The reversal of 43149400371 is 17300494134.

43149400371 is a `hidden beast` number, since 43 + 149 + 400 + 3 + 71 = 666.

It is not a de Polignac number, because 43149400371 - 2¹⁴ = 43149383987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43149400373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 74782035 + ... + 74782611.

Almost surely, 2^43149400371 is an apocalyptic number.

43149400371 is a deficient number, since it is larger than the sum of its proper divisors (38587530957).

43149400371 is a wasteful number, since it uses less digits than its factorization.

43149400371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 43149400371 in words is "forty-three billion, one hundred forty-nine million, four hundred thousand, three hundred seventy-one".