21680629462 has 8 divisors (see below), whose sum is σ = 32570145792. Its totient is φ = 10823914200.

The previous prime is 21680629427. The next prime is 21680629469. The reversal of 21680629462 is 26492608612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21680629469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8198614 + ... + 8201257.

It is an arithmetic number, because the mean of its divisors is an integer number (4071268224).

Almost surely, 2^21680629462 is an apocalyptic number.

21680629462 is a deficient number, since it is larger than the sum of its proper divisors (10889516330).

21680629462 is a wasteful number, since it uses less digits than its factorization.

21680629462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16400534.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 21680629462 in words is "twenty-one billion, six hundred eighty million, six hundred twenty-nine thousand, four hundred sixty-two".