36007863681521 has 8 divisors (see below), whose sum is σ = 36022768027464. Its totient is φ = 35992960358400.

The previous prime is 36007863681469. The next prime is 36007863681527. The reversal of 36007863681521 is 12518636870063.

It can be written as a sum of positive squares in 4 ways, for example, as 6687111543025 + 29320752138496 = 2585945^2 + 5414864^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36007863681521 - 2³⁴ = 35990683812337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36007863681527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74689781 + ... + 75170333.

It is an arithmetic number, because the mean of its divisors is an integer number (4502846003433).

Almost surely, 2^{36007863681521} is an apocalyptic number.

It is an amenable number.

36007863681521 is a deficient number, since it is larger than the sum of its proper divisors (14904345943).

36007863681521 is a wasteful number, since it uses less digits than its factorization.

36007863681521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511411.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 36007863681521 in words is "thirty-six trillion, seven billion, eight hundred sixty-three million, six hundred eighty-one thousand, five hundred twenty-one".