993257888311 has 4 divisors (see below), whose sum is σ = 1069662341272. Its totient is φ = 916853435352.

The previous prime is 993257888303. The next prime is 993257888347. The reversal of 993257888311 is 113888752399.

993257888311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113888752399 = 50969 ⋅2234471.

It is a cyclic number.

It is not a de Polignac number, because 993257888311 - 2³ = 993257888303 is a prime.

It is a super-2 number, since 2×993257888311² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993257888611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38202226461 + ... + 38202226486.

It is an arithmetic number, because the mean of its divisors is an integer number (267415585318).

Almost surely, 2^993257888311 is an apocalyptic number.

993257888311 is a deficient number, since it is larger than the sum of its proper divisors (76404452961).

993257888311 is a wasteful number, since it uses less digits than its factorization.

993257888311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76404452960.

The product of its digits is 26127360, while the sum is 64.

The spelling of 993257888311 in words is "nine hundred ninety-three billion, two hundred fifty-seven million, eight hundred eighty-eight thousand, three hundred eleven".