15535252400413 has 2 divisors, whose sum is σ = 15535252400414. Its totient is φ = 15535252400412.

The previous prime is 15535252400323. The next prime is 15535252400429. The reversal of 15535252400413 is 31400425253551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12818497965849 + 2716754434564 = 3580293^2 + 1648258^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15535252400413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15535252406413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7767626200206 + 7767626200207.

It is an arithmetic number, because the mean of its divisors is an integer number (7767626200207).

Almost surely, 2^{15535252400413} is an apocalyptic number.

It is an amenable number.

15535252400413 is a deficient number, since it is larger than the sum of its proper divisors (1).

15535252400413 is an equidigital number, since it uses as much as digits as its factorization.

15535252400413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360000, while the sum is 40.

Adding to 15535252400413 its reverse (31400425253551), we get a palindrome (46935677653964).

The spelling of 15535252400413 in words is "fifteen trillion, five hundred thirty-five billion, two hundred fifty-two million, four hundred thousand, four hundred thirteen".