383390552340 has 144 divisors (see below), whose sum is σ = 1194893171472. Its totient is φ = 99431774208.

The previous prime is 383390552339. The next prime is 383390552357. The reversal of 383390552340 is 43255093383.

383390552340 is a `hidden beast` number, since 3 + 8 + 3 + 3 + 90 + 552 + 3 + 4 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 104188219524 + 279202332816 = 322782^2 + 528396^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17418222 + ... + 17440218.

Almost surely, 2^383390552340 is an apocalyptic number.

383390552340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 383390552340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (597446585736).

383390552340 is an abundant number, since it is smaller than the sum of its proper divisors (811502619132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

383390552340 is a wasteful number, since it uses less digits than its factorization.

383390552340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24666 (or 24661 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 383390552340 in words is "three hundred eighty-three billion, three hundred ninety million, five hundred fifty-two thousand, three hundred forty".