20631862503 has 48 divisors (see below), whose sum is σ = 34226190336. Its totient is φ = 11731910400.

The previous prime is 20631862483. The next prime is 20631862561. The reversal of 20631862503 is 30526813602.

It is a happy number.

20631862503 is a `hidden beast` number, since 20 + 6 + 3 + 1 + 8 + 625 + 0 + 3 = 666.

It is not a de Polignac number, because 20631862503 - 2²⁰ = 20630813927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20631862403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17178303 + ... + 17179503.

It is an arithmetic number, because the mean of its divisors is an integer number (713045632).

Almost surely, 2^20631862503 is an apocalyptic number.

20631862503 is a deficient number, since it is larger than the sum of its proper divisors (13594327833).

20631862503 is a wasteful number, since it uses less digits than its factorization.

20631862503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324 (or 2321 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 20631862503 in words is "twenty billion, six hundred thirty-one million, eight hundred sixty-two thousand, five hundred three".