36223251781861 has 16 divisors (see below), whose sum is σ = 36813926256640. Its totient is φ = 35634081193920.

The previous prime is 36223251781837. The next prime is 36223251781889. The reversal of 36223251781861 is 16818715232263.

It is a cyclic number.

It is not a de Polignac number, because 36223251781861 - 2⁷ = 36223251781733 is a prime.

It is a super-2 number, since 2×36223251781861² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36223251731861) 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, 149070115 + ... + 149312911.

It is an arithmetic number, because the mean of its divisors is an integer number (2300870391040).

Almost surely, 2^{36223251781861} is an apocalyptic number.

It is an amenable number.

36223251781861 is a deficient number, since it is larger than the sum of its proper divisors (590674474779).

36223251781861 is a wasteful number, since it uses less digits than its factorization.

36223251781861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245884.

The product of its digits is 5806080, while the sum is 55.

The spelling of 36223251781861 in words is "thirty-six trillion, two hundred twenty-three billion, two hundred fifty-one million, seven hundred eighty-one thousand, eight hundred sixty-one".