1500066665055 has 96 divisors (see below), whose sum is σ = 3101748249600. Its totient is φ = 655720496640.

The previous prime is 1500066665051. The next prime is 1500066665057. The reversal of 1500066665055 is 5505666600051.

It is not a de Polignac number, because 1500066665055 - 2² = 1500066665051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1500066665055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1500066665051) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23869875 + ... + 23932635.

It is an arithmetic number, because the mean of its divisors is an integer number (32309877600).

Almost surely, 2^{1500066665055} is an apocalyptic number.

1500066665055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1500066665055 is an abundant number, since it is smaller than the sum of its proper divisors (1601681584545).

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

1500066665055 is a wasteful number, since it uses less digits than its factorization.

1500066665055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66101 (or 66098 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 1500066665055 in words is "one trillion, five hundred billion, sixty-six million, six hundred sixty-five thousand, fifty-five".