1615413342401 has 4 divisors (see below), whose sum is σ = 1641895528404. Its totient is φ = 1588931156400.

The previous prime is 1615413342391. The next prime is 1615413342427. The reversal of 1615413342401 is 1042433145161.

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 232439694400 + 1382973648001 = 482120^2 + 1175999^2 .

It is a cyclic number.

It is not a de Polignac number, because 1615413342401 - 2²⁶ = 1615346233537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1615413342901) 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, 13241092910 + ... + 13241093031.

It is an arithmetic number, because the mean of its divisors is an integer number (410473882101).

Almost surely, 2^{1615413342401} is an apocalyptic number.

It is an amenable number.

1615413342401 is a deficient number, since it is larger than the sum of its proper divisors (26482186003).

1615413342401 is an equidigital number, since it uses as much as digits as its factorization.

1615413342401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26482186002.

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 1615413342401 its reverse (1042433145161), we get a palindrome (2657846487562).

The spelling of 1615413342401 in words is "one trillion, six hundred fifteen billion, four hundred thirteen million, three hundred forty-two thousand, four hundred one".