21641045662632 has 128 divisors (see below), whose sum is σ = 60660734423040. Its totient is φ = 6377481127680.

The previous prime is 21641045662603. The next prime is 21641045662657. The reversal of 21641045662632 is 23626654014612.

It is a super-2 number, since 2×21641045662632² (a number of 27 digits) contains 22 as substring.

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, 3606468 + ... + 7502579.

It is an arithmetic number, because the mean of its divisors is an integer number (473911987680).

Almost surely, 2^{21641045662632} is an apocalyptic number.

21641045662632 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21641045662632 is an abundant number, since it is smaller than the sum of its proper divisors (39019688760408).

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

21641045662632 is a wasteful number, since it uses less digits than its factorization.

21641045662632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11109271 (or 11109267 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 48.

The spelling of 21641045662632 in words is "twenty-one trillion, six hundred forty-one billion, forty-five million, six hundred sixty-two thousand, six hundred thirty-two".