20492729503 has 8 divisors (see below), whose sum is σ = 20855334816. Its totient is φ = 20132179200.

The previous prime is 20492729489. The next prime is 20492729507. The reversal of 20492729503 is 30592729402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20492729503 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 20492729503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20492729507) 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, 493626 + ... + 533527.

It is an arithmetic number, because the mean of its divisors is an integer number (2606916852).

Almost surely, 2^20492729503 is an apocalyptic number.

20492729503 is a deficient number, since it is larger than the sum of its proper divisors (362605313).

20492729503 is a wasteful number, since it uses less digits than its factorization.

20492729503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027505.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 20492729503 in words is "twenty billion, four hundred ninety-two million, seven hundred twenty-nine thousand, five hundred three".