20641792623 has 8 divisors (see below), whose sum is σ = 27973577136. Its totient is φ = 13535601600.

The previous prime is 20641792621. The next prime is 20641792631. The reversal of 20641792623 is 32629714602.

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

It is not a de Polignac number, because 20641792623 - 2¹ = 20641792621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20641792621) 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, 56398158 + ... + 56398523.

It is an arithmetic number, because the mean of its divisors is an integer number (3496697142).

Almost surely, 2^20641792623 is an apocalyptic number.

20641792623 is a deficient number, since it is larger than the sum of its proper divisors (7331784513).

20641792623 is a wasteful number, since it uses less digits than its factorization.

20641792623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112796745.

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 20641792623 in words is "twenty billion, six hundred forty-one million, seven hundred ninety-two thousand, six hundred twenty-three".