20964724914 has 64 divisors (see below), whose sum is σ = 49821069312. Its totient is φ = 5756572800.

The previous prime is 20964724909. The next prime is 20964724927. The reversal of 20964724914 is 41942746902.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24519 + ... + 206229.

It is an arithmetic number, because the mean of its divisors is an integer number (778454208).

Almost surely, 2^20964724914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20964724914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24910534656).

20964724914 is an abundant number, since it is smaller than the sum of its proper divisors (28856344398).

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

20964724914 is a wasteful number, since it uses less digits than its factorization.

20964724914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181831.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 20964724914 in words is "twenty billion, nine hundred sixty-four million, seven hundred twenty-four thousand, nine hundred fourteen".