136403845657677 has 24 divisors (see below), whose sum is σ = 212228067269400. Its totient is φ = 83923299911808.

The previous prime is 136403845657669. The next prime is 136403845657687. The reversal of 136403845657677 is 776756548304631.

136403845657677 is a `hidden beast` number, since 1 + 3 + 6 + 4 + 0 + 3 + 8 + 45 + 6 + 576 + 7 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12753426585636 + 123650419072041 = 3571194^2 + 11119821^2 .

It is not a de Polignac number, because 136403845657677 - 2³ = 136403845657669 is a prime.

It is a super-2 number, since 2×136403845657677² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136403845657637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121160802 + ... + 122281427.

It is an arithmetic number, because the mean of its divisors is an integer number (8842836136225).

Almost surely, 2^{136403845657677} is an apocalyptic number.

It is an amenable number.

136403845657677 is a deficient number, since it is larger than the sum of its proper divisors (75824221611723).

136403845657677 is a wasteful number, since it uses less digits than its factorization.

136403845657677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243447037 (or 243447034 counting only the distinct ones).

The product of its (nonzero) digits is 2133734400, while the sum is 72.

The spelling of 136403845657677 in words is "one hundred thirty-six trillion, four hundred three billion, eight hundred forty-five million, six hundred fifty-seven thousand, six hundred seventy-seven".