15216451117 has 16 divisors (see below), whose sum is σ = 17575372800. Its totient is φ = 12904501248.

The previous prime is 15216451087. The next prime is 15216451127. The reversal of 15216451117 is 71115461251.

It is a cyclic number.

It is not a de Polignac number, because 15216451117 - 2⁷ = 15216450989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15216451127) 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 in 15 ways as a sum of consecutive naturals, for example, 239668 + ... + 296434.

It is an arithmetic number, because the mean of its divisors is an integer number (1098460800).

Almost surely, 2^15216451117 is an apocalyptic number.

It is an amenable number.

15216451117 is a deficient number, since it is larger than the sum of its proper divisors (2358921683).

15216451117 is a wasteful number, since it uses less digits than its factorization.

15216451117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57180.

The product of its digits is 8400, while the sum is 34.

The spelling of 15216451117 in words is "fifteen billion, two hundred sixteen million, four hundred fifty-one thousand, one hundred seventeen".