12553191401 has 4 divisors (see below), whose sum is σ = 12986060100. Its totient is φ = 12120322704.

The previous prime is 12553191389. The next prime is 12553191407. The reversal of 12553191401 is 10419135521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8983248400 + 3569943001 = 94780^2 + 59749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12553191401 is a prime.

It is a super-2 number, since 2×12553191401² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12553191407) 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, 216434306 + ... + 216434363.

It is an arithmetic number, because the mean of its divisors is an integer number (3246515025).

Almost surely, 2^12553191401 is an apocalyptic number.

It is an amenable number.

12553191401 is a deficient number, since it is larger than the sum of its proper divisors (432868699).

12553191401 is an equidigital number, since it uses as much as digits as its factorization.

12553191401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432868698.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 12553191401 in words is "twelve billion, five hundred fifty-three million, one hundred ninety-one thousand, four hundred one".