20670237423 has 64 divisors (see below), whose sum is σ = 35703037440. Its totient is φ = 11680012800.

The previous prime is 20670237397. The next prime is 20670237481. The reversal of 20670237423 is 32473207602.

20670237423 is a `hidden beast` number, since 206 + 7 + 0 + 23 + 7 + 423 = 666.

It is not a de Polignac number, because 20670237423 - 2²⁵ = 20636682991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20670237223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 521113 + ... + 559373.

It is an arithmetic number, because the mean of its divisors is an integer number (557859960).

Almost surely, 2^20670237423 is an apocalyptic number.

20670237423 is a deficient number, since it is larger than the sum of its proper divisors (15032800017).

20670237423 is a wasteful number, since it uses less digits than its factorization.

20670237423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38405 (or 38399 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 36.

The spelling of 20670237423 in words is "twenty billion, six hundred seventy million, two hundred thirty-seven thousand, four hundred twenty-three".