20632469637 has 8 divisors (see below), whose sum is σ = 29626110304. Its totient is φ = 12696904368.

The previous prime is 20632469603. The next prime is 20632469653. The reversal of 20632469637 is 73696423602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20632469637 - 2¹⁶ = 20632404101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20632469687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264518803 + ... + 264518880.

It is an arithmetic number, because the mean of its divisors is an integer number (3703263788).

Almost surely, 2^20632469637 is an apocalyptic number.

It is an amenable number.

20632469637 is a deficient number, since it is larger than the sum of its proper divisors (8993640667).

20632469637 is a wasteful number, since it uses less digits than its factorization.

20632469637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529037699.

The product of its (nonzero) digits is 1959552, while the sum is 48.

The spelling of 20632469637 in words is "twenty billion, six hundred thirty-two million, four hundred sixty-nine thousand, six hundred thirty-seven".