40520255101 has 2 divisors, whose sum is σ = 40520255102. Its totient is φ = 40520255100.

The previous prime is 40520255077. The next prime is 40520255117. The reversal of 40520255101 is 10155202504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25909731225 + 14610523876 = 160965^2 + 120874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40520255101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40520255131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20260127550 + 20260127551.

It is an arithmetic number, because the mean of its divisors is an integer number (20260127551).

Almost surely, 2^40520255101 is an apocalyptic number.

It is an amenable number.

40520255101 is a deficient number, since it is larger than the sum of its proper divisors (1).

40520255101 is an equidigital number, since it uses as much as digits as its factorization.

40520255101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 25.

Adding to 40520255101 its reverse (10155202504), we get a palindrome (50675457605).

The spelling of 40520255101 in words is "forty billion, five hundred twenty million, two hundred fifty-five thousand, one hundred one".