2126361028669 has 4 divisors (see below), whose sum is σ = 2238274767040. Its totient is φ = 2014447290300.

The previous prime is 2126361028609. The next prime is 2126361028681. The reversal of 2126361028669 is 9668201636212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2126361028669 - 2⁷ = 2126361028541 is a prime.

It is a super-2 number, since 2×2126361028669² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126361028609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55956869157 + ... + 55956869194.

It is an arithmetic number, because the mean of its divisors is an integer number (559568691760).

Almost surely, 2^{2126361028669} is an apocalyptic number.

It is an amenable number.

2126361028669 is a deficient number, since it is larger than the sum of its proper divisors (111913738371).

2126361028669 is a wasteful number, since it uses less digits than its factorization.

2126361028669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111913738370.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 2126361028669 in words is "two trillion, one hundred twenty-six billion, three hundred sixty-one million, twenty-eight thousand, six hundred sixty-nine".