40651214557 has 2 divisors, whose sum is σ = 40651214558. Its totient is φ = 40651214556.

The previous prime is 40651214537. The next prime is 40651214561. The reversal of 40651214557 is 75541215604.

40651214557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23662438276 + 16988776281 = 153826^2 + 130341^2 .

It is a cyclic number.

It is not a de Polignac number, because 40651214557 - 2¹¹ = 40651212509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40651214537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20325607278 + 20325607279.

It is an arithmetic number, because the mean of its divisors is an integer number (20325607279).

Almost surely, 2^40651214557 is an apocalyptic number.

It is an amenable number.

40651214557 is a deficient number, since it is larger than the sum of its proper divisors (1).

40651214557 is an equidigital number, since it uses as much as digits as its factorization.

40651214557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 40651214557 in words is "forty billion, six hundred fifty-one million, two hundred fourteen thousand, five hundred fifty-seven".