2166026021494 has 32 divisors (see below), whose sum is σ = 3445616322720. Its totient is φ = 1017690680832.

The previous prime is 2166026021473. The next prime is 2166026021501. The reversal of 2166026021494 is 4941206206612.

It is a super-2 number, since 2×2166026021494² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2166026021494.

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, 56486352 + ... + 56524684.

It is an arithmetic number, because the mean of its divisors is an integer number (107675510085).

Almost surely, 2^{2166026021494} is an apocalyptic number.

2166026021494 is a deficient number, since it is larger than the sum of its proper divisors (1279590301226).

2166026021494 is a wasteful number, since it uses less digits than its factorization.

2166026021494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40944.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 2166026021494 in words is "two trillion, one hundred sixty-six billion, twenty-six million, twenty-one thousand, four hundred ninety-four".