36520311421 has 16 divisors (see below), whose sum is σ = 44017976448. Its totient is φ = 29888742400.

The previous prime is 36520311419. The next prime is 36520311431. The reversal of 36520311421 is 12411302563.

36520311421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 36520311421 - 2¹ = 36520311419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36520311421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36520311431) 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, 4241260 + ... + 4249861.

It is an arithmetic number, because the mean of its divisors is an integer number (2751123528).

Almost surely, 2^36520311421 is an apocalyptic number.

It is an amenable number.

36520311421 is a deficient number, since it is larger than the sum of its proper divisors (7497665027).

36520311421 is a wasteful number, since it uses less digits than its factorization.

36520311421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8491172.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 36520311421 its reverse (12411302563), we get a palindrome (48931613984).

The spelling of 36520311421 in words is "thirty-six billion, five hundred twenty million, three hundred eleven thousand, four hundred twenty-one".