15719467121 has 2 divisors, whose sum is σ = 15719467122. Its totient is φ = 15719467120.

The previous prime is 15719467091. The next prime is 15719467147. The reversal of 15719467121 is 12176491751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11695341025 + 4024126096 = 108145^2 + 63436^2 .

It is a cyclic number.

It is not a de Polignac number, because 15719467121 - 2¹⁴ = 15719450737 is a prime.

It is not a weakly prime, because it can be changed into another prime (15719467151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7859733560 + 7859733561.

It is an arithmetic number, because the mean of its divisors is an integer number (7859733561).

Almost surely, 2^15719467121 is an apocalyptic number.

It is an amenable number.

15719467121 is a deficient number, since it is larger than the sum of its proper divisors (1).

15719467121 is an equidigital number, since it uses as much as digits as its factorization.

15719467121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 44.

The spelling of 15719467121 in words is "fifteen billion, seven hundred nineteen million, four hundred sixty-seven thousand, one hundred twenty-one".