15156161660551 has 4 divisors (see below), whose sum is σ = 15204583902592. Its totient is φ = 15107739418512.

The previous prime is 15156161660527. The next prime is 15156161660579. The reversal of 15156161660551 is 15506616165151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15156161660551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15156161660495 and 15156161660504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15156161660581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24211120551 + ... + 24211121176.

It is an arithmetic number, because the mean of its divisors is an integer number (3801145975648).

Almost surely, 2^{15156161660551} is an apocalyptic number.

15156161660551 is a deficient number, since it is larger than the sum of its proper divisors (48422242041).

15156161660551 is an equidigital number, since it uses as much as digits as its factorization.

15156161660551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48422242040.

The product of its (nonzero) digits is 810000, while the sum is 49.

The spelling of 15156161660551 in words is "fifteen trillion, one hundred fifty-six billion, one hundred sixty-one million, six hundred sixty thousand, five hundred fifty-one".