15551414009 has 2 divisors, whose sum is σ = 15551414010. Its totient is φ = 15551414008.

The previous prime is 15551413951. The next prime is 15551414059. The reversal of 15551414009 is 90041415551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12597817600 + 2953596409 = 112240^2 + 54347^2 .

It is a cyclic number.

It is not a de Polignac number, because 15551414009 - 2²⁸ = 15282978553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15551414009.

It is not a weakly prime, because it can be changed into another prime (15551414059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7775707004 + 7775707005.

It is an arithmetic number, because the mean of its divisors is an integer number (7775707005).

Almost surely, 2^15551414009 is an apocalyptic number.

It is an amenable number.

15551414009 is a deficient number, since it is larger than the sum of its proper divisors (1).

15551414009 is an equidigital number, since it uses as much as digits as its factorization.

15551414009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 15551414009 in words is "fifteen billion, five hundred fifty-one million, four hundred fourteen thousand, nine".