20034623637 has 72 divisors (see below), whose sum is σ = 34168330560. Its totient is φ = 11080627200.

The previous prime is 20034623621. The next prime is 20034623647. The reversal of 20034623637 is 73632643002.

20034623637 is a `hidden beast` number, since 20 + 0 + 3 + 4 + 623 + 6 + 3 + 7 = 666.

It is not a de Polignac number, because 20034623637 - 2⁴ = 20034623621 is a prime.

It is a super-4 number, since 4×20034623637⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20034623647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14719837 + ... + 14721197.

Almost surely, 2^20034623637 is an apocalyptic number.

It is an amenable number.

20034623637 is a deficient number, since it is larger than the sum of its proper divisors (14133706923).

20034623637 is a wasteful number, since it uses less digits than its factorization.

20034623637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595 (or 1551 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 36.

The spelling of 20034623637 in words is "twenty billion, thirty-four million, six hundred twenty-three thousand, six hundred thirty-seven".