41400865501 has 2 divisors, whose sum is σ = 41400865502. Its totient is φ = 41400865500.

The previous prime is 41400865489. The next prime is 41400865543. The reversal of 41400865501 is 10556800414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38092890276 + 3307975225 = 195174^2 + 57515^2 .

It is a cyclic number.

It is not a de Polignac number, because 41400865501 - 2⁵ = 41400865469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41400863501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20700432750 + 20700432751.

It is an arithmetic number, because the mean of its divisors is an integer number (20700432751).

Almost surely, 2^41400865501 is an apocalyptic number.

It is an amenable number.

41400865501 is a deficient number, since it is larger than the sum of its proper divisors (1).

41400865501 is an equidigital number, since it uses as much as digits as its factorization.

41400865501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 34.

The spelling of 41400865501 in words is "forty-one billion, four hundred million, eight hundred sixty-five thousand, five hundred one".