363140502640021 has 4 divisors (see below), whose sum is σ = 363151904615500. Its totient is φ = 363129100664544.

The previous prime is 363140502639991. The next prime is 363140502640037. The reversal of 363140502640021 is 120046205041363.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122728066192900 + 240412436447121 = 11078270^2 + 15505239^2 .

It is a cyclic number.

It is not a de Polignac number, because 363140502640021 - 2²⁹ = 363139965769109 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 (363140502640081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5700939966 + ... + 5701003663.

It is an arithmetic number, because the mean of its divisors is an integer number (90787976153875).

Almost surely, 2^{363140502640021} is an apocalyptic number.

It is an amenable number.

363140502640021 is a deficient number, since it is larger than the sum of its proper divisors (11401975479).

363140502640021 is a wasteful number, since it uses less digits than its factorization.

363140502640021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11401975478.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 363140502640021 its reverse (120046205041363), we get a palindrome (483186707681384).

The spelling of 363140502640021 in words is "three hundred sixty-three trillion, one hundred forty billion, five hundred two million, six hundred forty thousand, twenty-one".