20879782041 has 8 divisors (see below), whose sum is σ = 29477339424. Its totient is φ = 13101039680.

The previous prime is 20879782039. The next prime is 20879782051. The reversal of 20879782041 is 14028797802.

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

It is a cyclic number.

It is not a de Polignac number, because 20879782041 - 2¹ = 20879782039 is a prime.

It is a super-2 number, since 2×20879782041² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20879782031) 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, 204703695 + ... + 204703796.

It is an arithmetic number, because the mean of its divisors is an integer number (3684667428).

Almost surely, 2^20879782041 is an apocalyptic number.

It is an amenable number.

20879782041 is a deficient number, since it is larger than the sum of its proper divisors (8597557383).

20879782041 is a wasteful number, since it uses less digits than its factorization.

20879782041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409407511.

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 20879782041 in words is "twenty billion, eight hundred seventy-nine million, seven hundred eighty-two thousand, forty-one".