15583117951 has 2 divisors, whose sum is σ = 15583117952. Its totient is φ = 15583117950.

The previous prime is 15583117939. The next prime is 15583117961. The reversal of 15583117951 is 15971138551.

It is a strong prime.

It is an emirp because it is prime and its reverse (15971138551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15583117951 - 2²¹ = 15581020799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15583117931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7791558975 + 7791558976.

It is an arithmetic number, because the mean of its divisors is an integer number (7791558976).

Almost surely, 2^15583117951 is an apocalyptic number.

15583117951 is a deficient number, since it is larger than the sum of its proper divisors (1).

15583117951 is an equidigital number, since it uses as much as digits as its factorization.

15583117951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189000, while the sum is 46.

The spelling of 15583117951 in words is "fifteen billion, five hundred eighty-three million, one hundred seventeen thousand, nine hundred fifty-one".