16155724979 has 2 divisors, whose sum is σ = 16155724980. Its totient is φ = 16155724978.

The previous prime is 16155724967. The next prime is 16155725041. The reversal of 16155724979 is 97942755161.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (97942755161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16155724979 - 2¹² = 16155720883 is a prime.

It is a super-2 number, since 2×16155724979² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16152724979) 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, 8077862489 + 8077862490.

It is an arithmetic number, because the mean of its divisors is an integer number (8077862490).

Almost surely, 2^16155724979 is an apocalyptic number.

16155724979 is a deficient number, since it is larger than the sum of its proper divisors (1).

16155724979 is an equidigital number, since it uses as much as digits as its factorization.

16155724979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4762800, while the sum is 56.

The spelling of 16155724979 in words is "sixteen billion, one hundred fifty-five million, seven hundred twenty-four thousand, nine hundred seventy-nine".