1665105011150 has 96 divisors (see below), whose sum is σ = 3887821877760. Its totient is φ = 517331041920.

The previous prime is 1665105011117. The next prime is 1665105011153. The reversal of 1665105011150 is 511105015661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665105011153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5290349 + ... + 5596248.

It is an arithmetic number, because the mean of its divisors is an integer number (40498144560).

Almost surely, 2^{1665105011150} is an apocalyptic number.

1665105011150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1665105011150 is an abundant number, since it is smaller than the sum of its proper divisors (2222716866610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1665105011150 is a wasteful number, since it uses less digits than its factorization.

1665105011150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10886658 (or 10886653 counting only the distinct ones).

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

The spelling of 1665105011150 in words is "one trillion, six hundred sixty-five billion, one hundred five million, eleven thousand, one hundred fifty".