2166967539406 has 4 divisors (see below), whose sum is σ = 3250451309112. Its totient is φ = 1083483769702.

The previous prime is 2166967539389. The next prime is 2166967539449. The reversal of 2166967539406 is 6049357696612.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×2166967539406³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541741884850 + ... + 541741884853.

It is an arithmetic number, because the mean of its divisors is an integer number (812612827278).

Almost surely, 2^{2166967539406} is an apocalyptic number.

2166967539406 is a deficient number, since it is larger than the sum of its proper divisors (1083483769706).

2166967539406 is a wasteful number, since it uses less digits than its factorization.

2166967539406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083483769705.

The product of its (nonzero) digits is 88179840, while the sum is 64.

The spelling of 2166967539406 in words is "two trillion, one hundred sixty-six billion, nine hundred sixty-seven million, five hundred thirty-nine thousand, four hundred six".