20879377294 has 4 divisors (see below), whose sum is σ = 31319065944. Its totient is φ = 10439688646.

The previous prime is 20879377279. The next prime is 20879377297. The reversal of 20879377294 is 49277397802.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20879377297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5219844322 + ... + 5219844325.

It is an arithmetic number, because the mean of its divisors is an integer number (7829766486).

Almost surely, 2^20879377294 is an apocalyptic number.

20879377294 is a deficient number, since it is larger than the sum of its proper divisors (10439688650).

20879377294 is a wasteful number, since it uses less digits than its factorization.

20879377294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10439688649.

The product of its (nonzero) digits is 10668672, while the sum is 58.

The spelling of 20879377294 in words is "twenty billion, eight hundred seventy-nine million, three hundred seventy-seven thousand, two hundred ninety-four".