364681421021 has 2 divisors, whose sum is σ = 364681421022. Its totient is φ = 364681421020.

The previous prime is 364681420973. The next prime is 364681421047. The reversal of 364681421021 is 120124186463.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251889556996 + 112791864025 = 501886^2 + 335845^2 .

It is an emirp because it is prime and its reverse (120124186463) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-364681421021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (364681421821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182340710510 + 182340710511.

It is an arithmetic number, because the mean of its divisors is an integer number (182340710511).

Almost surely, 2^364681421021 is an apocalyptic number.

It is an amenable number.

364681421021 is a deficient number, since it is larger than the sum of its proper divisors (1).

364681421021 is an equidigital number, since it uses as much as digits as its factorization.

364681421021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 364681421021 in words is "three hundred sixty-four billion, six hundred eighty-one million, four hundred twenty-one thousand, twenty-one".