383340202953813 has 72 divisors (see below), whose sum is σ = 644614234942392. Its totient is φ = 218882094988032.

The previous prime is 383340202953809. The next prime is 383340202953857. The reversal of 383340202953813 is 318359202043383.

383340202953813 is a `hidden beast` number, since 3 + 8 + 3 + 340 + 2 + 0 + 295 + 3 + 8 + 1 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 111354369841764 + 271985833112049 = 10552458^2 + 16491993^2 .

It is not a de Polignac number, because 383340202953813 - 2² = 383340202953809 is a prime.

It is a super-2 number, since 2×383340202953813² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 383340202953813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383340202953803) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5265842731 + ... + 5265915527.

It is an arithmetic number, because the mean of its divisors is an integer number (8952975485311).

Almost surely, 2^{383340202953813} is an apocalyptic number.

It is an amenable number.

383340202953813 is a deficient number, since it is larger than the sum of its proper divisors (261274031988579).

383340202953813 is a wasteful number, since it uses less digits than its factorization.

383340202953813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81891 (or 81881 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 54.

The spelling of 383340202953813 in words is "three hundred eighty-three trillion, three hundred forty billion, two hundred two million, nine hundred fifty-three thousand, eight hundred thirteen".