15501507841 has 2 divisors, whose sum is σ = 15501507842. Its totient is φ = 15501507840.

The previous prime is 15501507811. The next prime is 15501507881. The reversal of 15501507841 is 14870510551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14950197441 + 551310400 = 122271^2 + 23480^2 .

It is a cyclic number.

It is not a de Polignac number, because 15501507841 - 2¹³ = 15501499649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15501507841.

It is not a weakly prime, because it can be changed into another prime (15501507811) 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, 7750753920 + 7750753921.

It is an arithmetic number, because the mean of its divisors is an integer number (7750753921).

Almost surely, 2^15501507841 is an apocalyptic number.

It is an amenable number.

15501507841 is a deficient number, since it is larger than the sum of its proper divisors (1).

15501507841 is an equidigital number, since it uses as much as digits as its factorization.

15501507841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28000, while the sum is 37.

The spelling of 15501507841 in words is "fifteen billion, five hundred one million, five hundred seven thousand, eight hundred forty-one".