11311573648 has 10 divisors (see below), whose sum is σ = 21916173974. Its totient is φ = 5655786816.

The previous prime is 11311573621. The next prime is 11311573657. The reversal of 11311573648 is 84637511311.

It can be written as a sum of positive squares in only one way, i.e., 8830736784 + 2480836864 = 93972^2 + 49808^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11311573648.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353486661 + ... + 353486692.

Almost surely, 2^11311573648 is an apocalyptic number.

It is an amenable number.

11311573648 is a deficient number, since it is larger than the sum of its proper divisors (10604600326).

11311573648 is an equidigital number, since it uses as much as digits as its factorization.

11311573648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706973361 (or 706973355 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The spelling of 11311573648 in words is "eleven billion, three hundred eleven million, five hundred seventy-three thousand, six hundred forty-eight".