660267988374 has 16 divisors (see below), whose sum is σ = 1320590343600. Its totient is φ = 220080268320.

The previous prime is 660267988351. The next prime is 660267988381. The reversal of 660267988374 is 473889762066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2106549 + ... + 2399600.

It is an arithmetic number, because the mean of its divisors is an integer number (82536896475).

Almost surely, 2^660267988374 is an apocalyptic number.

660267988374 is an abundant number, since it is smaller than the sum of its proper divisors (660322355226).

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

660267988374 is a wasteful number, since it uses less digits than its factorization.

660267988374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4530575.

The product of its (nonzero) digits is 146313216, while the sum is 66.

The spelling of 660267988374 in words is "six hundred sixty billion, two hundred sixty-seven million, nine hundred eighty-eight thousand, three hundred seventy-four".