40340525557 has 2 divisors, whose sum is σ = 40340525558. Its totient is φ = 40340525556.

The previous prime is 40340525521. The next prime is 40340525573. The reversal of 40340525557 is 75552504304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36570442756 + 3770082801 = 191234^2 + 61401^2 .

It is a cyclic number.

It is not a de Polignac number, because 40340525557 - 2¹⁹ = 40340001269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40340525597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20170262778 + 20170262779.

It is an arithmetic number, because the mean of its divisors is an integer number (20170262779).

Almost surely, 2^40340525557 is an apocalyptic number.

It is an amenable number.

40340525557 is a deficient number, since it is larger than the sum of its proper divisors (1).

40340525557 is an equidigital number, since it uses as much as digits as its factorization.

40340525557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420000, while the sum is 40.

The spelling of 40340525557 in words is "forty billion, three hundred forty million, five hundred twenty-five thousand, five hundred fifty-seven".