40257522345181 has 2 divisors, whose sum is σ = 40257522345182. Its totient is φ = 40257522345180.

The previous prime is 40257522345167. The next prime is 40257522345211. The reversal of 40257522345181 is 18154322575204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35628423792025 + 4629098553156 = 5968955^2 + 2151534^2 .

It is a cyclic number.

It is not a de Polignac number, because 40257522345181 - 2²⁵ = 40257488790749 is a prime.

It is a super-2 number, since 2×40257522345181² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40257522345881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20128761172590 + 20128761172591.

It is an arithmetic number, because the mean of its divisors is an integer number (20128761172591).

Almost surely, 2^{40257522345181} is an apocalyptic number.

It is an amenable number.

40257522345181 is a deficient number, since it is larger than the sum of its proper divisors (1).

40257522345181 is an equidigital number, since it uses as much as digits as its factorization.

40257522345181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688000, while the sum is 49.

The spelling of 40257522345181 in words is "forty trillion, two hundred fifty-seven billion, five hundred twenty-two million, three hundred forty-five thousand, one hundred eighty-one".