20654182894 has 4 divisors (see below), whose sum is σ = 30981274344. Its totient is φ = 10327091446.

The previous prime is 20654182877. The next prime is 20654182897. The reversal of 20654182894 is 49828145602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49828145602 = 2 ⋅24914072801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20654182897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5163545722 + ... + 5163545725.

It is an arithmetic number, because the mean of its divisors is an integer number (7745318586).

Almost surely, 2^20654182894 is an apocalyptic number.

20654182894 is a deficient number, since it is larger than the sum of its proper divisors (10327091450).

20654182894 is a wasteful number, since it uses less digits than its factorization.

20654182894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10327091449.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 20654182894 in words is "twenty billion, six hundred fifty-four million, one hundred eighty-two thousand, eight hundred ninety-four".