15153856261 has 2 divisors, whose sum is σ = 15153856262. Its totient is φ = 15153856260.

The previous prime is 15153856213. The next prime is 15153856279. The reversal of 15153856261 is 16265835151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9762625636 + 5391230625 = 98806^2 + 73425^2 .

It is an emirp because it is prime and its reverse (16265835151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15153856261 - 2²³ = 15145467653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15153856561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7576928130 + 7576928131.

It is an arithmetic number, because the mean of its divisors is an integer number (7576928131).

Almost surely, 2^15153856261 is an apocalyptic number.

It is an amenable number.

15153856261 is a deficient number, since it is larger than the sum of its proper divisors (1).

15153856261 is an equidigital number, since it uses as much as digits as its factorization.

15153856261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 43.

The spelling of 15153856261 in words is "fifteen billion, one hundred fifty-three million, eight hundred fifty-six thousand, two hundred sixty-one".