11051056261 has 24 divisors (see below), whose sum is σ = 13999789440. Its totient is φ = 8527487232.

The previous prime is 11051056249. The next prime is 11051056267. The reversal of 11051056261 is 16265015011.

It is a happy number.

It is not a de Polignac number, because 11051056261 - 2¹¹ = 11051054213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11051056267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72226 + ... + 165283.

It is an arithmetic number, because the mean of its divisors is an integer number (583324560).

Almost surely, 2^11051056261 is an apocalyptic number.

It is an amenable number.

11051056261 is a deficient number, since it is larger than the sum of its proper divisors (2948733179).

11051056261 is a wasteful number, since it uses less digits than its factorization.

11051056261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237573 (or 237556 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 11051056261 in words is "eleven billion, fifty-one million, fifty-six thousand, two hundred sixty-one".