20683279415 has 16 divisors (see below), whose sum is σ = 26775785088. Its totient is φ = 15279453696.

The previous prime is 20683279361. The next prime is 20683279429. The reversal of 20683279415 is 51497238602.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20683279415 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20683279415.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2291087 + ... + 2300096.

It is an arithmetic number, because the mean of its divisors is an integer number (1673486568).

It is a 1-persistent number, because it is pandigital, but 2⋅20683279415 = 41366558830 is not.

Almost surely, 2^20683279415 is an apocalyptic number.

20683279415 is a deficient number, since it is larger than the sum of its proper divisors (6092505673).

20683279415 is a wasteful number, since it uses less digits than its factorization.

20683279415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4591258.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 20683279415 in words is "twenty billion, six hundred eighty-three million, two hundred seventy-nine thousand, four hundred fifteen".