783544340340 has 72 divisors (see below), whose sum is σ = 2377514405448. Its totient is φ = 208878059520.

The previous prime is 783544340303. The next prime is 783544340357. The reversal of 783544340340 is 43043445387.

783544340340 is a `hidden beast` number, since 78 + 3 + 544 + 3 + 4 + 0 + 34 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 46237040784 + 737307299556 = 215028^2 + 858666^2 .

It is a super-2 number, since 2×783544340340² (a number of 25 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 135597 + ... + 1259156.

It is an arithmetic number, because the mean of its divisors is an integer number (33021033409).

Almost surely, 2^783544340340 is an apocalyptic number.

It is an amenable number.

783544340340 is an abundant number, since it is smaller than the sum of its proper divisors (1593970065108).

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

783544340340 is a wasteful number, since it uses less digits than its factorization.

783544340340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397889 (or 1397884 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 45.

The spelling of 783544340340 in words is "seven hundred eighty-three billion, five hundred forty-four million, three hundred forty thousand, three hundred forty".