20900742430 has 8 divisors (see below), whose sum is σ = 37621336392. Its totient is φ = 8360296968.

The previous prime is 20900742403. The next prime is 20900742491. The reversal of 20900742430 is 3424700902.

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

It is a junction number, because it is equal to n+sod(n) for n = 20900742392 and 20900742401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045037112 + ... + 1045037131.

It is an arithmetic number, because the mean of its divisors is an integer number (4702667049).

Almost surely, 2^20900742430 is an apocalyptic number.

20900742430 is a deficient number, since it is larger than the sum of its proper divisors (16720593962).

20900742430 is a wasteful number, since it uses less digits than its factorization.

20900742430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090074250.

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 20900742430 in words is "twenty billion, nine hundred million, seven hundred forty-two thousand, four hundred thirty".