20493132794 has 16 divisors (see below), whose sum is σ = 31399826688. Its totient is φ = 10026608592.

The previous prime is 20493132757. The next prime is 20493132797. The reversal of 20493132794 is 49723139402.

It is not an unprimeable number, because it can be changed into a prime (20493132797) 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, 546512 + ... + 582804.

It is an arithmetic number, because the mean of its divisors is an integer number (1962489168).

Almost surely, 2^20493132794 is an apocalyptic number.

20493132794 is a deficient number, since it is larger than the sum of its proper divisors (10906693894).

20493132794 is a wasteful number, since it uses less digits than its factorization.

20493132794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42349.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 20493132794 in words is "twenty billion, four hundred ninety-three million, one hundred thirty-two thousand, seven hundred ninety-four".