20257873630 has 16 divisors (see below), whose sum is σ = 36469733184. Its totient is φ = 8101913760.

The previous prime is 20257873609. The next prime is 20257873631. The reversal of 20257873630 is 3637875202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20257873631) 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, 84081 + ... + 218140.

It is an arithmetic number, because the mean of its divisors is an integer number (2279358324).

Almost surely, 2^20257873630 is an apocalyptic number.

20257873630 is a deficient number, since it is larger than the sum of its proper divisors (16211859554).

20257873630 is a wasteful number, since it uses less digits than its factorization.

20257873630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308931.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 20257873630 in words is "twenty billion, two hundred fifty-seven million, eight hundred seventy-three thousand, six hundred thirty".