11377981821736 has 8 divisors (see below), whose sum is σ = 21333715915770. Its totient is φ = 5688990910864.

The previous prime is 11377981821719. The next prime is 11377981821757. The reversal of 11377981821736 is 63712818977311.

It can be written as a sum of positive squares in only one way, i.e., 7765663449636 + 3612318372100 = 2786694^2 + 1900610^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711123863851 + ... + 711123863866.

Almost surely, 2^{11377981821736} is an apocalyptic number.

It is an amenable number.

11377981821736 is a deficient number, since it is larger than the sum of its proper divisors (9955734094034).

11377981821736 is a wasteful number, since it uses less digits than its factorization.

11377981821736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422247727723 (or 1422247727719 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 64.

The spelling of 11377981821736 in words is "eleven trillion, three hundred seventy-seven billion, nine hundred eighty-one million, eight hundred twenty-one thousand, seven hundred thirty-six".