21962764998 has 48 divisors (see below), whose sum is σ = 49735745280. Its totient is φ = 6991226352.

The previous prime is 21962764997. The next prime is 21962765003. The reversal of 21962764998 is 89946726912.

21962764998 is a `hidden beast` number, since 2 + 19 + 62 + 76 + 499 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21962764997) 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, 213415 + ... + 299117.

It is an arithmetic number, because the mean of its divisors is an integer number (1036161360).

Almost surely, 2^21962764998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21962764998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24867872640).

21962764998 is an abundant number, since it is smaller than the sum of its proper divisors (27772980282).

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

21962764998 is a wasteful number, since it uses less digits than its factorization.

21962764998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86353 (or 86350 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The spelling of 21962764998 in words is "twenty-one billion, nine hundred sixty-two million, seven hundred sixty-four thousand, nine hundred ninety-eight".