2166006457340 has 48 divisors (see below), whose sum is σ = 5223288309120. Its totient is φ = 746184041280.

The previous prime is 2166006457313. The next prime is 2166006457357. The reversal of 2166006457340 is 437546006612.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 2166006457291 and 2166006457300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259087502 + ... + 259095861.

It is an arithmetic number, because the mean of its divisors is an integer number (108818506440).

Almost surely, 2^{2166006457340} is an apocalyptic number.

2166006457340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2166006457340 is an abundant number, since it is smaller than the sum of its proper divisors (3057281851780).

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

2166006457340 is a wasteful number, since it uses less digits than its factorization.

2166006457340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518183402 (or 518183400 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 2166006457340 in words is "two trillion, one hundred sixty-six billion, six million, four hundred fifty-seven thousand, three hundred forty".