21497829962 has 64 divisors (see below), whose sum is σ = 38595744000. Its totient is φ = 8789921280.

The previous prime is 21497829953. The next prime is 21497829967. The reversal of 21497829962 is 26992879412.

It is not an unprimeable number, because it can be changed into a prime (21497829967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5469614 + ... + 5473542.

It is an arithmetic number, because the mean of its divisors is an integer number (603058500).

Almost surely, 2^21497829962 is an apocalyptic number.

21497829962 is a deficient number, since it is larger than the sum of its proper divisors (17097914038).

21497829962 is a wasteful number, since it uses less digits than its factorization.

21497829962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4191.

The product of its digits is 7838208, while the sum is 59.

The spelling of 21497829962 in words is "twenty-one billion, four hundred ninety-seven million, eight hundred twenty-nine thousand, nine hundred sixty-two".