1363636626421 has 16 divisors (see below), whose sum is σ = 1466368450560. Its totient is φ = 1264016735280.

The previous prime is 1363636626397. The next prime is 1363636626439. The reversal of 1363636626421 is 1246266363631.

It is a cyclic number.

It is not a de Polignac number, because 1363636626421 - 2⁵ = 1363636626389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1363636626461) 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, 2917860 + ... + 3352786.

It is an arithmetic number, because the mean of its divisors is an integer number (91648028160).

Almost surely, 2^{1363636626421} is an apocalyptic number.

It is an amenable number.

1363636626421 is a deficient number, since it is larger than the sum of its proper divisors (102731824139).

1363636626421 is a wasteful number, since it uses less digits than its factorization.

1363636626421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438504.

The product of its digits is 3359232, while the sum is 49.

The spelling of 1363636626421 in words is "one trillion, three hundred sixty-three billion, six hundred thirty-six million, six hundred twenty-six thousand, four hundred twenty-one".