660671101545 has 128 divisors (see below), whose sum is σ = 1328775168000. Its totient is φ = 278534640384.

The previous prime is 660671101543. The next prime is 660671101549. The reversal of 660671101545 is 545101176066.

It is a happy number.

660671101545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 660671101545 - 2¹ = 660671101543 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 660671101497 and 660671101506.

It is not an unprimeable number, because it can be changed into a prime (660671101543) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 85542054 + ... + 85549776.

It is an arithmetic number, because the mean of its divisors is an integer number (10381056000).

Almost surely, 2^660671101545 is an apocalyptic number.

660671101545 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

660671101545 is an abundant number, since it is smaller than the sum of its proper divisors (668104066455).

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

660671101545 is a wasteful number, since it uses less digits than its factorization.

660671101545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9044 (or 9030 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 660671101545 in words is "six hundred sixty billion, six hundred seventy-one million, one hundred one thousand, five hundred forty-five".