43240275961 has 4 divisors (see below), whose sum is σ = 43312464000. Its totient is φ = 43168087924.

The previous prime is 43240275907. The next prime is 43240275989. The reversal of 43240275961 is 16957204234.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43240275961 - 2¹⁷ = 43240144889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43240075961) 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 3 ways as a sum of consecutive naturals, for example, 36093121 + ... + 36094318.

It is an arithmetic number, because the mean of its divisors is an integer number (10828116000).

Almost surely, 2^43240275961 is an apocalyptic number.

It is an amenable number.

43240275961 is a deficient number, since it is larger than the sum of its proper divisors (72188039).

43240275961 is an equidigital number, since it uses as much as digits as its factorization.

43240275961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72188038.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 43240275961 in words is "forty-three billion, two hundred forty million, two hundred seventy-five thousand, nine hundred sixty-one".