2137666423 has 4 divisors (see below), whose sum is σ = 2169571960. Its totient is φ = 2105760888.

The previous prime is 2137666417. The next prime is 2137666469. The reversal of 2137666423 is 3246667312.

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

It is a cyclic number.

It is not a de Polignac number, because 2137666423 - 2¹³ = 2137658231 is a prime.

It is a super-2 number, since 2×2137666423² = 9139235472043229858, 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 (2137666403) 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, 15952668 + ... + 15952801.

It is an arithmetic number, because the mean of its divisors is an integer number (542392990).

Almost surely, 2^2137666423 is an apocalyptic number.

2137666423 is a deficient number, since it is larger than the sum of its proper divisors (31905537).

2137666423 is an equidigital number, since it uses as much as digits as its factorization.

2137666423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31905536.

The product of its digits is 217728, while the sum is 40.

The square root of 2137666423 is about 46234.9048122736. The cubic root of 2137666423 is about 1288.1901633936.

The spelling of 2137666423 in words is "two billion, one hundred thirty-seven million, six hundred sixty-six thousand, four hundred twenty-three".