15555230545 has 8 divisors (see below), whose sum is σ = 18666970560. Its totient is φ = 12443721840.

The previous prime is 15555230539. The next prime is 15555230549. The reversal of 15555230545 is 54503255551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15555230545 - 2⁷ = 15555230417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15555230498 and 15555230507.

It is not an unprimeable number, because it can be changed into a prime (15555230549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176316 + ... + 249394.

It is an arithmetic number, because the mean of its divisors is an integer number (2333371320).

Almost surely, 2^15555230545 is an apocalyptic number.

It is an amenable number.

15555230545 is a deficient number, since it is larger than the sum of its proper divisors (3111740015).

15555230545 is an equidigital number, since it uses as much as digits as its factorization.

15555230545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115655.

The product of its (nonzero) digits is 375000, while the sum is 40.

The spelling of 15555230545 in words is "fifteen billion, five hundred fifty-five million, two hundred thirty thousand, five hundred forty-five".