11261551513 has 8 divisors (see below), whose sum is σ = 11552744448. Its totient is φ = 10972508064.

The previous prime is 11261551507. The next prime is 11261551529. The reversal of 11261551513 is 31515516211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11261551513 - 2⁹ = 11261551001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11261591513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526756 + ... + 547717.

It is an arithmetic number, because the mean of its divisors is an integer number (1444093056).

Almost surely, 2^11261551513 is an apocalyptic number.

It is an amenable number.

11261551513 is a deficient number, since it is larger than the sum of its proper divisors (291192935).

11261551513 is a wasteful number, since it uses less digits than its factorization.

11261551513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074743.

The product of its digits is 4500, while the sum is 31.

The spelling of 11261551513 in words is "eleven billion, two hundred sixty-one million, five hundred fifty-one thousand, five hundred thirteen".