21031876962 has 48 divisors (see below), whose sum is σ = 47481007392. Its totient is φ = 6977365920.

The previous prime is 21031876909. The next prime is 21031876963. The reversal of 21031876962 is 26967813012.

21031876962 is a `hidden beast` number, since 210 + 318 + 7 + 69 + 62 = 666.

It is not an unprimeable number, because it can be changed into a prime (21031876963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3 + ... + 205094.

It is an arithmetic number, because the mean of its divisors is an integer number (989187654).

Almost surely, 2^21031876962 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21031876962, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23740503696).

21031876962 is an abundant number, since it is smaller than the sum of its proper divisors (26449130430).

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

21031876962 is a wasteful number, since it uses less digits than its factorization.

21031876962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205325 (or 205313 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 21031876962 in words is "twenty-one billion, thirty-one million, eight hundred seventy-six thousand, nine hundred sixty-two".