636261234413 has 16 divisors (see below), whose sum is σ = 777277783296. Its totient is φ = 508931871360.

The previous prime is 636261234407. The next prime is 636261234437. The reversal of 636261234413 is 314432162636.

It is a cyclic number.

It is not a de Polignac number, because 636261234413 - 2²⁶ = 636194125549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636261237413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48187706 + ... + 48200907.

It is an arithmetic number, because the mean of its divisors is an integer number (48579861456).

Almost surely, 2^636261234413 is an apocalyptic number.

It is an amenable number.

636261234413 is a deficient number, since it is larger than the sum of its proper divisors (141016548883).

636261234413 is a wasteful number, since it uses less digits than its factorization.

636261234413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96388684.

The product of its digits is 373248, while the sum is 41.

The spelling of 636261234413 in words is "six hundred thirty-six billion, two hundred sixty-one million, two hundred thirty-four thousand, four hundred thirteen".