15901901129 has 2 divisors, whose sum is σ = 15901901130. Its totient is φ = 15901901128.

The previous prime is 15901901123. The next prime is 15901901131. The reversal of 15901901129 is 92110910951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15042531904 + 859369225 = 122648^2 + 29315^2 .

It is an emirp because it is prime and its reverse (92110910951) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15901901129 is a prime.

It is a Sophie Germain prime.

Together with 15901901131, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15901901092 and 15901901101.

It is not a weakly prime, because it can be changed into another prime (15901901123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7950950564 + 7950950565.

It is an arithmetic number, because the mean of its divisors is an integer number (7950950565).

Almost surely, 2^15901901129 is an apocalyptic number.

It is an amenable number.

15901901129 is a deficient number, since it is larger than the sum of its proper divisors (1).

15901901129 is an equidigital number, since it uses as much as digits as its factorization.

15901901129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 38.

The spelling of 15901901129 in words is "fifteen billion, nine hundred one million, nine hundred one thousand, one hundred twenty-nine".