15405140424061 has 2 divisors, whose sum is σ = 15405140424062. Its totient is φ = 15405140424060.

The previous prime is 15405140423989. The next prime is 15405140424067. The reversal of 15405140424061 is 16042404150451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12966876912025 + 2438263512036 = 3600955^2 + 1561494^2 .

It is a cyclic number.

It is not a de Polignac number, because 15405140424061 - 2¹³ = 15405140415869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15405140424061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15405140424067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7702570212030 + 7702570212031.

It is an arithmetic number, because the mean of its divisors is an integer number (7702570212031).

Almost surely, 2^{15405140424061} is an apocalyptic number.

It is an amenable number.

15405140424061 is a deficient number, since it is larger than the sum of its proper divisors (1).

15405140424061 is an equidigital number, since it uses as much as digits as its factorization.

15405140424061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 15405140424061 in words is "fifteen trillion, four hundred five billion, one hundred forty million, four hundred twenty-four thousand, sixty-one".