21677204662 has 16 divisors (see below), whose sum is σ = 34431642000. Its totient is φ = 10200107008.

The previous prime is 21677204641. The next prime is 21677204701. The reversal of 21677204662 is 26640277612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476589 + ... + 520087.

It is an arithmetic number, because the mean of its divisors is an integer number (2151977625).

Almost surely, 2^21677204662 is an apocalyptic number.

21677204662 is a deficient number, since it is larger than the sum of its proper divisors (12754437338).

21677204662 is a wasteful number, since it uses less digits than its factorization.

21677204662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58175.

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 21677204662 in words is "twenty-one billion, six hundred seventy-seven million, two hundred four thousand, six hundred sixty-two".