11556633451031 has 4 divisors (see below), whose sum is σ = 11658904543632. Its totient is φ = 11454362358432.

The previous prime is 11556633451003. The next prime is 11556633451037. The reversal of 11556633451031 is 13015433665511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11556633451031 - 2³⁴ = 11539453581847 is a prime.

It is a super-2 number, since 2×11556633451031² (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 (11556633451037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51135546131 + ... + 51135546356.

It is an arithmetic number, because the mean of its divisors is an integer number (2914726135908).

Almost surely, 2^{11556633451031} is an apocalyptic number.

11556633451031 is a deficient number, since it is larger than the sum of its proper divisors (102271092601).

11556633451031 is a wasteful number, since it uses less digits than its factorization.

11556633451031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102271092600.

The product of its (nonzero) digits is 486000, while the sum is 44.

The spelling of 11556633451031 in words is "eleven trillion, five hundred fifty-six billion, six hundred thirty-three million, four hundred fifty-one thousand, thirty-one".