155507065660 has 48 divisors (see below), whose sum is σ = 339522936480. Its totient is φ = 59779906560.

The previous prime is 155507065639. The next prime is 155507065717. The reversal of 155507065660 is 66560705551.

It is a self number, because there is not a number n which added to its sum of digits gives 155507065660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1360305 + ... + 1470184.

It is an arithmetic number, because the mean of its divisors is an integer number (7073394510).

Almost surely, 2^155507065660 is an apocalyptic number.

155507065660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155507065660 is an abundant number, since it is smaller than the sum of its proper divisors (184015870820).

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

155507065660 is a wasteful number, since it uses less digits than its factorization.

155507065660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830606 (or 2830604 counting only the distinct ones).

The product of its (nonzero) digits is 945000, while the sum is 46.

The spelling of 155507065660 in words is "one hundred fifty-five billion, five hundred seven million, sixty-five thousand, six hundred sixty".