1115551660001 has 8 divisors (see below), whose sum is σ = 1164446046720. Its totient is φ = 1066689951712.

The previous prime is 1115551659979. The next prime is 1115551660007. The reversal of 1115551660001 is 1000661555111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115551660001 is a prime.

It is a super-2 number, since 2×1115551660001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1115551660001.

It is not an unprimeable number, because it can be changed into a prime (1115551660007) 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, 8099825 + ... + 8236398.

It is an arithmetic number, because the mean of its divisors is an integer number (145555755840).

Almost surely, 2^{1115551660001} is an apocalyptic number.

It is an amenable number.

1115551660001 is a deficient number, since it is larger than the sum of its proper divisors (48894386719).

1115551660001 is a wasteful number, since it uses less digits than its factorization.

1115551660001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16339215.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 1115551660001 in words is "one trillion, one hundred fifteen billion, five hundred fifty-one million, six hundred sixty thousand, one".