356040643869 has 12 divisors (see below), whose sum is σ = 514477479516. Its totient is φ = 237269714112.

The previous prime is 356040643867. The next prime is 356040643939. The reversal of 356040643869 is 968346040653.

356040643869 is a `hidden beast` number, since 3 + 560 + 40 + 6 + 4 + 38 + 6 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 316980260100 + 39060383769 = 563010^2 + 197637^2 .

It is not a de Polignac number, because 356040643869 - 2¹ = 356040643867 is a prime.

It is a super-2 number, since 2×356040643869² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (356040643867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7534734 + ... + 7581839.

It is an arithmetic number, because the mean of its divisors is an integer number (42873123293).

Almost surely, 2^356040643869 is an apocalyptic number.

It is an amenable number.

356040643869 is a deficient number, since it is larger than the sum of its proper divisors (158436835647).

356040643869 is a wasteful number, since it uses less digits than its factorization.

356040643869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15119196 (or 15119193 counting only the distinct ones).

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

The spelling of 356040643869 in words is "three hundred fifty-six billion, forty million, six hundred forty-three thousand, eight hundred sixty-nine".