20768282493 has 16 divisors (see below), whose sum is σ = 32028197376. Its totient is φ = 11724606000.

The previous prime is 20768282461. The next prime is 20768282503. The reversal of 20768282493 is 39428286702.

It is a happy number.

It is not a de Polignac number, because 20768282493 - 2⁵ = 20768282461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20768282413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5955883 + ... + 5959368.

It is an arithmetic number, because the mean of its divisors is an integer number (2001762336).

Almost surely, 2^20768282493 is an apocalyptic number.

It is an amenable number.

20768282493 is a deficient number, since it is larger than the sum of its proper divisors (11259914883).

20768282493 is a wasteful number, since it uses less digits than its factorization.

20768282493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11915344.

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 20768282493 in words is "twenty billion, seven hundred sixty-eight million, two hundred eighty-two thousand, four hundred ninety-three".