40123315541 has 2 divisors, whose sum is σ = 40123315542. Its totient is φ = 40123315540.

The previous prime is 40123315489. The next prime is 40123315567. The reversal of 40123315541 is 14551332104.

40123315541 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., 38394834916 + 1728480625 = 195946^2 + 41575^2 .

It is a cyclic number.

It is not a de Polignac number, because 40123315541 - 2¹⁴ = 40123299157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40123318541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061657770 + 20061657771.

It is an arithmetic number, because the mean of its divisors is an integer number (20061657771).

Almost surely, 2^40123315541 is an apocalyptic number.

It is an amenable number.

40123315541 is a deficient number, since it is larger than the sum of its proper divisors (1).

40123315541 is an equidigital number, since it uses as much as digits as its factorization.

40123315541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 40123315541 its reverse (14551332104), we get a palindrome (54674647645).

The spelling of 40123315541 in words is "forty billion, one hundred twenty-three million, three hundred fifteen thousand, five hundred forty-one".