660545134620 has 48 divisors (see below), whose sum is σ = 2113744432128. Its totient is φ = 150981744960.

The previous prime is 660545134603. The next prime is 660545134631. The reversal of 660545134620 is 26431545066.

It is a super-3 number, since 3×660545134620³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 786362836 + ... + 786363675.

It is an arithmetic number, because the mean of its divisors is an integer number (44036342336).

Almost surely, 2^660545134620 is an apocalyptic number.

660545134620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

660545134620 is an abundant number, since it is smaller than the sum of its proper divisors (1453199297508).

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

660545134620 is a wasteful number, since it uses less digits than its factorization.

660545134620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572726530 (or 1572726528 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 660545134620 its reverse (26431545066), we get a palindrome (686976679686).

The spelling of 660545134620 in words is "six hundred sixty billion, five hundred forty-five million, one hundred thirty-four thousand, six hundred twenty".