43257075061 has 2 divisors, whose sum is σ = 43257075062. Its totient is φ = 43257075060.

The previous prime is 43257075041. The next prime is 43257075073. The reversal of 43257075061 is 16057075234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43241123025 + 15952036 = 207945^2 + 3994^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43257075061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43257075011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21628537530 + 21628537531.

It is an arithmetic number, because the mean of its divisors is an integer number (21628537531).

Almost surely, 2^43257075061 is an apocalyptic number.

It is an amenable number.

43257075061 is a deficient number, since it is larger than the sum of its proper divisors (1).

43257075061 is an equidigital number, since it uses as much as digits as its factorization.

43257075061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 43257075061 in words is "forty-three billion, two hundred fifty-seven million, seventy-five thousand, sixty-one".