21626062612 has 96 divisors (see below), whose sum is σ = 47985315840. Its totient is φ = 8283600000.

The previous prime is 21626062607. The next prime is 21626062621.

21626062612 is nontrivially palindromic in base 10.

It is a congruent 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, 6105562 + ... + 6109102.

It is an arithmetic number, because the mean of its divisors is an integer number (499847040).

Almost surely, 2^21626062612 is an apocalyptic number.

21626062612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21626062612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23992657920).

21626062612 is an abundant number, since it is smaller than the sum of its proper divisors (26359253228).

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

21626062612 is a wasteful number, since it uses less digits than its factorization.

21626062612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3893 (or 3891 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

It can be divided in two parts, 216260 and 62612, that added together give a palindrome (278872).

The spelling of 21626062612 in words is "twenty-one billion, six hundred twenty-six million, sixty-two thousand, six hundred twelve".