993284638811 has 4 divisors (see below), whose sum is σ = 1002074768472. Its totient is φ = 984494509152.

The previous prime is 993284638769. The next prime is 993284638813. The reversal of 993284638811 is 118836482399.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 993284638811 - 2¹⁴ = 993284622427 is a prime.

It is a super-2 number, since 2×993284638811² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (993284638813) 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, 4395064661 + ... + 4395064886.

It is an arithmetic number, because the mean of its divisors is an integer number (250518692118).

Almost surely, 2^993284638811 is an apocalyptic number.

993284638811 is a deficient number, since it is larger than the sum of its proper divisors (8790129661).

993284638811 is a wasteful number, since it uses less digits than its factorization.

993284638811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8790129660.

The product of its digits is 17915904, while the sum is 62.

The spelling of 993284638811 in words is "nine hundred ninety-three billion, two hundred eighty-four million, six hundred thirty-eight thousand, eight hundred eleven".