21777757403482 has 16 divisors (see below), whose sum is σ = 36408634669440. Its totient is φ = 9708969244608.

The previous prime is 21777757403473. The next prime is 21777757403593. The reversal of 21777757403482 is 28430475777712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16855848738 + ... + 16855850029.

It is an arithmetic number, because the mean of its divisors is an integer number (2275539666840).

Almost surely, 2^{21777757403482} is an apocalyptic number.

21777757403482 is a deficient number, since it is larger than the sum of its proper divisors (14630877265958).

21777757403482 is a wasteful number, since it uses less digits than its factorization.

21777757403482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33711698805.

The product of its (nonzero) digits is 129077760, while the sum is 64.

The spelling of 21777757403482 in words is "twenty-one trillion, seven hundred seventy-seven billion, seven hundred fifty-seven million, four hundred three thousand, four hundred eighty-two".