40254633121 has 2 divisors, whose sum is σ = 40254633122. Its totient is φ = 40254633120.

The previous prime is 40254633101. The next prime is 40254633151. The reversal of 40254633121 is 12133645204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33147300096 + 7107333025 = 182064^2 + 84305^2 .

It is a cyclic number.

It is not a de Polignac number, because 40254633121 - 2⁷ = 40254632993 is a prime.

It is not a weakly prime, because it can be changed into another prime (40254633101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20127316560 + 20127316561.

It is an arithmetic number, because the mean of its divisors is an integer number (20127316561).

Almost surely, 2^40254633121 is an apocalyptic number.

It is an amenable number.

40254633121 is a deficient number, since it is larger than the sum of its proper divisors (1).

40254633121 is an equidigital number, since it uses as much as digits as its factorization.

40254633121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 40254633121 in words is "forty billion, two hundred fifty-four million, six hundred thirty-three thousand, one hundred twenty-one".