2666148173406 has 24 divisors (see below), whose sum is σ = 6080688817320. Its totient is φ = 841941528336.

The previous prime is 2666148173363. The next prime is 2666148173411. The reversal of 2666148173406 is 6043718416662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3897877105 + ... + 3897877788.

It is an arithmetic number, because the mean of its divisors is an integer number (253362034055).

Almost surely, 2^{2666148173406} is an apocalyptic number.

2666148173406 is an abundant number, since it is smaller than the sum of its proper divisors (3414540643914).

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

2666148173406 is a wasteful number, since it uses less digits than its factorization.

2666148173406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7795754920 (or 7795754917 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 2666148173406 in words is "two trillion, six hundred sixty-six billion, one hundred forty-eight million, one hundred seventy-three thousand, four hundred six".