340836636789 has 72 divisors (see below), whose sum is σ = 567761772032. Its totient is φ = 196625880000.

The previous prime is 340836636779. The next prime is 340836636883. The reversal of 340836636789 is 987636638043.

It is a happy number.

340836636789 is a `hidden beast` number, since 3 + 408 + 36 + 63 + 67 + 89 = 666.

It is not a de Polignac number, because 340836636789 - 2¹¹ = 340836634741 is a prime.

It is a super-2 number, since 2×340836636789² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340836636709) 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, 1976544 + ... + 2142054.

Almost surely, 2^340836636789 is an apocalyptic number.

It is an amenable number.

340836636789 is a deficient number, since it is larger than the sum of its proper divisors (226925135243).

340836636789 is a wasteful number, since it uses less digits than its factorization.

340836636789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165631 (or 165617 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 63.

The spelling of 340836636789 in words is "three hundred forty billion, eight hundred thirty-six million, six hundred thirty-six thousand, seven hundred eighty-nine".