21277681371308 has 6 divisors (see below), whose sum is σ = 37235942399796. Its totient is φ = 10638840685652.

The previous prime is 21277681371293. The next prime is 21277681371391. The reversal of 21277681371308 is 80317318677212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2659710171410 + ... + 2659710171417.

It is an arithmetic number, because the mean of its divisors is an integer number (6205990399966).

Almost surely, 2^{21277681371308} is an apocalyptic number.

It is an amenable number.

21277681371308 is a deficient number, since it is larger than the sum of its proper divisors (15958261028488).

21277681371308 is a wasteful number, since it uses less digits than its factorization.

21277681371308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5319420342831 (or 5319420342829 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 56.

The spelling of 21277681371308 in words is "twenty-one trillion, two hundred seventy-seven billion, six hundred eighty-one million, three hundred seventy-one thousand, three hundred eight".