13123001554 has 8 divisors (see below), whose sum is σ = 21198694860. Its totient is φ = 6056769936.

The previous prime is 13123001543. The next prime is 13123001557. The reversal of 13123001554 is 45510032131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12979361329 + 143640225 = 113927^2 + 11985^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13123001557) 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, 252365389 + ... + 252365440.

Almost surely, 2^13123001554 is an apocalyptic number.

13123001554 is a deficient number, since it is larger than the sum of its proper divisors (8075693306).

13123001554 is a wasteful number, since it uses less digits than its factorization.

13123001554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504730844.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 13123001554 its reverse (45510032131), we get a palindrome (58633033685).

The spelling of 13123001554 in words is "thirteen billion, one hundred twenty-three million, one thousand, five hundred fifty-four".