320011355511 has 12 divisors (see below), whose sum is σ = 489429132192. Its totient is φ = 200791438656.

The previous prime is 320011355507. The next prime is 320011355513. The reversal of 320011355511 is 115553110023.

320011355511 is a `hidden beast` number, since 32 + 0 + 0 + 113 + 5 + 5 + 511 = 666.

It is not a de Polignac number, because 320011355511 - 2² = 320011355507 is a prime.

It is a super-2 number, since 2×320011355511² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320011355513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1045788591 + ... + 1045788896.

It is an arithmetic number, because the mean of its divisors is an integer number (40785761016).

Almost surely, 2^320011355511 is an apocalyptic number.

320011355511 is a deficient number, since it is larger than the sum of its proper divisors (169417776681).

320011355511 is a wasteful number, since it uses less digits than its factorization.

320011355511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091577510 (or 2091577507 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

Adding to 320011355511 its reverse (115553110023), we get a palindrome (435564465534).

The spelling of 320011355511 in words is "three hundred twenty billion, eleven million, three hundred fifty-five thousand, five hundred eleven".