20102401623 has 8 divisors (see below), whose sum is σ = 26804433136. Its totient is φ = 13400985600.

The previous prime is 20102401601. The next prime is 20102401637. The reversal of 20102401623 is 32610420102.

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

It is not a de Polignac number, because 20102401623 - 2⁵ = 20102401591 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20102401623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102401643) 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, 71338 + ... + 212823.

It is an arithmetic number, because the mean of its divisors is an integer number (3350554142).

Almost surely, 2^20102401623 is an apocalyptic number.

20102401623 is a deficient number, since it is larger than the sum of its proper divisors (6702031513).

20102401623 is a wasteful number, since it uses less digits than its factorization.

20102401623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307745.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20102401623 its reverse (32610420102), we get a palindrome (52712821725).

The spelling of 20102401623 in words is "twenty billion, one hundred two million, four hundred one thousand, six hundred twenty-three".