1415521261213 has 2 divisors, whose sum is σ = 1415521261214. Its totient is φ = 1415521261212.

The previous prime is 1415521261207. The next prime is 1415521261243. The reversal of 1415521261213 is 3121621255141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1162605810564 + 252915450649 = 1078242^2 + 502907^2 .

It is a cyclic number.

It is not a de Polignac number, because 1415521261213 - 2⁵ = 1415521261181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1415521261243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 707760630606 + 707760630607.

It is an arithmetic number, because the mean of its divisors is an integer number (707760630607).

Almost surely, 2^{1415521261213} is an apocalyptic number.

It is an amenable number.

1415521261213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1415521261213 is an equidigital number, since it uses as much as digits as its factorization.

1415521261213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 34.

The spelling of 1415521261213 in words is "one trillion, four hundred fifteen billion, five hundred twenty-one million, two hundred sixty-one thousand, two hundred thirteen".