15212355049 has 2 divisors, whose sum is σ = 15212355050. Its totient is φ = 15212355048.

The previous prime is 15212355031. The next prime is 15212355071. The reversal of 15212355049 is 94055321251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13949263449 + 1263091600 = 118107^2 + 35540^2 .

It is a cyclic number.

It is not a de Polignac number, because 15212355049 - 2¹³ = 15212346857 is a prime.

It is a super-2 number, since 2×15212355049² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15212354999 and 15212355017.

It is not a weakly prime, because it can be changed into another prime (15212355029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7606177524 + 7606177525.

It is an arithmetic number, because the mean of its divisors is an integer number (7606177525).

Almost surely, 2^15212355049 is an apocalyptic number.

It is an amenable number.

15212355049 is a deficient number, since it is larger than the sum of its proper divisors (1).

15212355049 is an equidigital number, since it uses as much as digits as its factorization.

15212355049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 15212355049 in words is "fifteen billion, two hundred twelve million, three hundred fifty-five thousand, forty-nine".