11451135236261 has 8 divisors (see below), whose sum is σ = 13095981560640. Its totient is φ = 9808531377408.

The previous prime is 11451135236227. The next prime is 11451135236269. The reversal of 11451135236261 is 16263253115411.

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 11451135236261 - 2¹⁰ = 11451135235237 is a prime.

It is a super-2 number, since 2×11451135236261² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11451135236269) 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, 560605436 + ... + 560625861.

It is an arithmetic number, because the mean of its divisors is an integer number (1636997695080).

Almost surely, 2^{11451135236261} is an apocalyptic number.

It is an amenable number.

11451135236261 is a deficient number, since it is larger than the sum of its proper divisors (1644846324379).

11451135236261 is a wasteful number, since it uses less digits than its factorization.

11451135236261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121232763.

The product of its digits is 129600, while the sum is 41.

The spelling of 11451135236261 in words is "eleven trillion, four hundred fifty-one billion, one hundred thirty-five million, two hundred thirty-six thousand, two hundred sixty-one".