20969420615 has 32 divisors (see below), whose sum is σ = 29611020096. Its totient is φ = 14054261760.

The previous prime is 20969420581. The next prime is 20969420621. The reversal of 20969420615 is 51602496902.

It is not a de Polignac number, because 20969420615 - 2¹⁸ = 20969158471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 417389 + ... + 464921.

It is an arithmetic number, because the mean of its divisors is an integer number (925344378).

Almost surely, 2^20969420615 is an apocalyptic number.

20969420615 is a deficient number, since it is larger than the sum of its proper divisors (8641599481).

20969420615 is a wasteful number, since it uses less digits than its factorization.

20969420615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48179.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 20969420615 in words is "twenty billion, nine hundred sixty-nine million, four hundred twenty thousand, six hundred fifteen".