20969319024 has 60 divisors (see below), whose sum is σ = 60271064776. Its totient is φ = 6800858496.

The previous prime is 20969318999. The next prime is 20969319067. The reversal of 20969319024 is 42091396902.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1962514 + ... + 1973169.

Almost surely, 2^20969319024 is an apocalyptic number.

20969319024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20969319024 is an abundant number, since it is smaller than the sum of its proper divisors (39301745752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20969319024 is a wasteful number, since it uses less digits than its factorization.

20969319024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935734 (or 3935725 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 20969319024 in words is "twenty billion, nine hundred sixty-nine million, three hundred nineteen thousand, twenty-four".