10665511555 has 8 divisors (see below), whose sum is σ = 12799408752. Its totient is φ = 8531879328.

The previous prime is 10665511543. The next prime is 10665511559. The reversal of 10665511555 is 55511556601.

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 10665511555 - 2⁵ = 10665511523 is a prime.

It is a super-2 number, since 2×10665511555² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10665511559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36924 + ... + 150646.

It is an arithmetic number, because the mean of its divisors is an integer number (1599926094).

Almost surely, 2^10665511555 is an apocalyptic number.

10665511555 is a deficient number, since it is larger than the sum of its proper divisors (2133897197).

10665511555 is a wasteful number, since it uses less digits than its factorization.

10665511555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132485.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 10665511555 in words is "ten billion, six hundred sixty-five million, five hundred eleven thousand, five hundred fifty-five".