21152513141 has 2 divisors, whose sum is σ = 21152513142. Its totient is φ = 21152513140.

The previous prime is 21152513119. The next prime is 21152513153. The reversal of 21152513141 is 14131525112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21016300900 + 136212241 = 144970^2 + 11671^2 .

It is a cyclic number.

It is not a de Polignac number, because 21152513141 - 2¹⁸ = 21152250997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21152513141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21152513101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10576256570 + 10576256571.

It is an arithmetic number, because the mean of its divisors is an integer number (10576256571).

Almost surely, 2^21152513141 is an apocalyptic number.

It is an amenable number.

21152513141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21152513141 is an equidigital number, since it uses as much as digits as its factorization.

21152513141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 26.

The spelling of 21152513141 in words is "twenty-one billion, one hundred fifty-two million, five hundred thirteen thousand, one hundred forty-one".