20623662430 has 24 divisors (see below), whose sum is σ = 43183424808. Its totient is φ = 7070969808.

The previous prime is 20623662407. The next prime is 20623662443. The reversal of 20623662430 is 3426632602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21044064 + ... + 21045043.

It is an arithmetic number, because the mean of its divisors is an integer number (1799309367).

Almost surely, 2^20623662430 is an apocalyptic number.

20623662430 is an abundant number, since it is smaller than the sum of its proper divisors (22559762378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20623662430 is a wasteful number, since it uses less digits than its factorization.

20623662430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42089128 (or 42089121 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 34.

The spelling of 20623662430 in words is "twenty billion, six hundred twenty-three million, six hundred sixty-two thousand, four hundred thirty".