660001651155 has 48 divisors (see below), whose sum is σ = 1426289289984. Its totient is φ = 274286399040.

The previous prime is 660001651151. The next prime is 660001651159. The reversal of 660001651155 is 551156100066.

It is an interprime number because it is at equal distance from previous prime (660001651151) and next prime (660001651159).

It is not a de Polignac number, because 660001651155 - 2² = 660001651151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660001651151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95234869 + ... + 95241798.

It is an arithmetic number, because the mean of its divisors is an integer number (29714360208).

Almost surely, 2^660001651155 is an apocalyptic number.

660001651155 is an abundant number, since it is smaller than the sum of its proper divisors (766287638829).

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

660001651155 is a wasteful number, since it uses less digits than its factorization.

660001651155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190476696 (or 190476693 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 660001651155 in words is "six hundred sixty billion, one million, six hundred fifty-one thousand, one hundred fifty-five".