43136510971 has 12 divisors (see below), whose sum is σ = 45165368080. Its totient is φ = 41195301840.

The previous prime is 43136510953. The next prime is 43136510983. The reversal of 43136510971 is 17901563134.

It is not a de Polignac number, because 43136510971 - 2¹¹ = 43136508923 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43136510171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269185 + ... + 398413.

Almost surely, 2^43136510971 is an apocalyptic number.

43136510971 is a deficient number, since it is larger than the sum of its proper divisors (2028857109).

43136510971 is a wasteful number, since it uses less digits than its factorization.

43136510971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129906 (or 129883 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 43136510971 in words is "forty-three billion, one hundred thirty-six million, five hundred ten thousand, nine hundred seventy-one".