15005140261 has 2 divisors, whose sum is σ = 15005140262. Its totient is φ = 15005140260.

The previous prime is 15005140259. The next prime is 15005140289. The reversal of 15005140261 is 16204150051.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13814476225 + 1190664036 = 117535^2 + 34506^2 .

It is a cyclic number.

It is not a de Polignac number, because 15005140261 - 2¹ = 15005140259 is a prime.

Together with 15005140259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15005140061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7502570130 + 7502570131.

It is an arithmetic number, because the mean of its divisors is an integer number (7502570131).

Almost surely, 2^15005140261 is an apocalyptic number.

It is an amenable number.

15005140261 is a deficient number, since it is larger than the sum of its proper divisors (1).

15005140261 is an equidigital number, since it uses as much as digits as its factorization.

15005140261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 15005140261 in words is "fifteen billion, five million, one hundred forty thousand, two hundred sixty-one".