15945145907 has 2 divisors, whose sum is σ = 15945145908. Its totient is φ = 15945145906.

The previous prime is 15945145883. The next prime is 15945145973. The reversal of 15945145907 is 70954154951.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (70954154951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15945145907 - 2²² = 15940951603 is a prime.

It is not a weakly prime, because it can be changed into another prime (15945175907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7972572953 + 7972572954.

It is an arithmetic number, because the mean of its divisors is an integer number (7972572954).

Almost surely, 2^15945145907 is an apocalyptic number.

15945145907 is a deficient number, since it is larger than the sum of its proper divisors (1).

15945145907 is an equidigital number, since it uses as much as digits as its factorization.

15945145907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134000, while the sum is 50.

The spelling of 15945145907 in words is "fifteen billion, nine hundred forty-five million, one hundred forty-five thousand, nine hundred seven".