2126297392066 has 4 divisors (see below), whose sum is σ = 3189446088102. Its totient is φ = 1063148696032.

The previous prime is 2126297392039. The next prime is 2126297392081. The reversal of 2126297392066 is 6602937926212.

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

It can be written as a sum of positive squares in only one way, i.e., 1762774013025 + 363523379041 = 1327695^2 + 602929^2 .

It is a super-2 number, since 2×2126297392066² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2126297391998 and 2126297392016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531574348015 + ... + 531574348018.

Almost surely, 2^{2126297392066} is an apocalyptic number.

2126297392066 is a deficient number, since it is larger than the sum of its proper divisors (1063148696036).

2126297392066 is a wasteful number, since it uses less digits than its factorization.

2126297392066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063148696035.

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 2126297392066 in words is "two trillion, one hundred twenty-six billion, two hundred ninety-seven million, three hundred ninety-two thousand, sixty-six".