1660389923260 has 48 divisors (see below), whose sum is σ = 3621089525760. Its totient is φ = 638758830080.

The previous prime is 1660389923243. The next prime is 1660389923263. The reversal of 1660389923260 is 623299830661.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660389923263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5420476 + ... + 5718595.

It is an arithmetic number, because the mean of its divisors is an integer number (75439365120).

Almost surely, 2^{1660389923260} is an apocalyptic number.

1660389923260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1660389923260 is an abundant number, since it is smaller than the sum of its proper divisors (1960699602500).

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

1660389923260 is a wasteful number, since it uses less digits than its factorization.

1660389923260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11139366 (or 11139364 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 55.

The spelling of 1660389923260 in words is "one trillion, six hundred sixty billion, three hundred eighty-nine million, nine hundred twenty-three thousand, two hundred sixty".