15530545523656 has 64 divisors (see below), whose sum is σ = 30679487942400. Its totient is φ = 7350073855488.

The previous prime is 15530545523641. The next prime is 15530545523659. The reversal of 15530545523656 is 65632554503551.

It is a junction number, because it is equal to n+sod(n) for n = 15530545523597 and 15530545523606.

It is not an unprimeable number, because it can be changed into a prime (15530545523659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1649899206 + ... + 1649908618.

It is an arithmetic number, because the mean of its divisors is an integer number (479366999100).

Almost surely, 2^{15530545523656} is an apocalyptic number.

It is an amenable number.

15530545523656 is a deficient number, since it is larger than the sum of its proper divisors (15148942418744).

15530545523656 is a wasteful number, since it uses less digits than its factorization.

15530545523656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17878 (or 17874 counting only the distinct ones).

The product of its (nonzero) digits is 40500000, while the sum is 55.

The spelling of 15530545523656 in words is "fifteen trillion, five hundred thirty billion, five hundred forty-five million, five hundred twenty-three thousand, six hundred fifty-six".