15228518401 has 2 divisors, whose sum is σ = 15228518402. Its totient is φ = 15228518400.

The previous prime is 15228518387. The next prime is 15228518429. The reversal of 15228518401 is 10481582251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14920866801 + 307651600 = 122151^2 + 17540^2 .

It is a cyclic number.

It is not a de Polignac number, because 15228518401 - 2¹⁷ = 15228387329 is a prime.

It is not a weakly prime, because it can be changed into another prime (15228518491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7614259200 + 7614259201.

It is an arithmetic number, because the mean of its divisors is an integer number (7614259201).

Almost surely, 2^15228518401 is an apocalyptic number.

It is an amenable number.

15228518401 is a deficient number, since it is larger than the sum of its proper divisors (1).

15228518401 is an equidigital number, since it uses as much as digits as its factorization.

15228518401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25600, while the sum is 37.

The spelling of 15228518401 in words is "fifteen billion, two hundred twenty-eight million, five hundred eighteen thousand, four hundred one".