2126702591 has 8 divisors (see below), whose sum is σ = 2303849520. Its totient is φ = 1963108056.

The previous prime is 2126702563. The next prime is 2126702603. The reversal of 2126702591 is 1952076212.

It is not a de Polignac number, because 2126702591 - 2⁶ = 2126702527 is a prime.

It is a super-2 number, since 2×2126702591² = 9045727821132226562, which 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 (2126702531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481805 + ... + 486198.

It is an arithmetic number, because the mean of its divisors is an integer number (287981190).

Almost surely, 2^2126702591 is an apocalyptic number.

2126702591 is a deficient number, since it is larger than the sum of its proper divisors (177146929).

2126702591 is an frugal number, since it uses more digits than its factorization.

2126702591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968042 (or 968016 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 2126702591 is about 46116.1857811333. The cubic root of 2126702591 is about 1285.9840637379.

The spelling of 2126702591 in words is "two billion, one hundred twenty-six million, seven hundred two thousand, five hundred ninety-one".