10155256261 has 2 divisors, whose sum is σ = 10155256262. Its totient is φ = 10155256260.

The previous prime is 10155256229. The next prime is 10155256283. The reversal of 10155256261 is 16265255101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10154391361 + 864900 = 100769^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 10155256261 - 2⁵ = 10155256229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10155256201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5077628130 + 5077628131.

It is an arithmetic number, because the mean of its divisors is an integer number (5077628131).

Almost surely, 2^10155256261 is an apocalyptic number.

It is an amenable number.

10155256261 is a deficient number, since it is larger than the sum of its proper divisors (1).

10155256261 is an equidigital number, since it uses as much as digits as its factorization.

10155256261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 34.

The spelling of 10155256261 in words is "ten billion, one hundred fifty-five million, two hundred fifty-six thousand, two hundred sixty-one".