11445510531551 has 8 divisors (see below), whose sum is σ = 11562304921200. Its totient is φ = 11328784230400.

The previous prime is 11445510531509. The next prime is 11445510531577. The reversal of 11445510531551 is 15513501554411.

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 11445510531551 - 2²² = 11445506337247 is a prime.

It is a super-2 number, since 2×11445510531551² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11445510531499 and 11445510531508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11445510531251) 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, 16684181 + ... + 17356638.

It is an arithmetic number, because the mean of its divisors is an integer number (1445288115150).

Almost surely, 2^{11445510531551} is an apocalyptic number.

11445510531551 is a deficient number, since it is larger than the sum of its proper divisors (116794389649).

11445510531551 is a wasteful number, since it uses less digits than its factorization.

11445510531551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34044249.

The product of its (nonzero) digits is 150000, while the sum is 41.

The spelling of 11445510531551 in words is "eleven trillion, four hundred forty-five billion, five hundred ten million, five hundred thirty-one thousand, five hundred fifty-one".