2126361028605 has 32 divisors (see below), whose sum is σ = 3745516705920. Its totient is φ = 1021504538880.

The previous prime is 2126361028601. The next prime is 2126361028609. The reversal of 2126361028605 is 5068201636212.

It is an interprime number because it is at equal distance from previous prime (2126361028601) and next prime (2126361028609).

It is not a de Polignac number, because 2126361028605 - 2² = 2126361028601 is a prime.

It is a super-2 number, since 2×2126361028605² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126361028601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59096862 + ... + 59132831.

It is an arithmetic number, because the mean of its divisors is an integer number (117047397060).

Almost surely, 2^{2126361028605} is an apocalyptic number.

It is an amenable number.

2126361028605 is a deficient number, since it is larger than the sum of its proper divisors (1619155677315).

2126361028605 is a wasteful number, since it uses less digits than its factorization.

2126361028605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118229821.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 2126361028605 in words is "two trillion, one hundred twenty-six billion, three hundred sixty-one million, twenty-eight thousand, six hundred five".