10001231553 has 4 divisors (see below), whose sum is σ = 13334975408. Its totient is φ = 6667487700.

The previous prime is 10001231507. The next prime is 10001231663. The reversal of 10001231553 is 35513210001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10001231553 - 2³³ = 1411296961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10001231503) 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, 1666871923 + ... + 1666871928.

It is an arithmetic number, because the mean of its divisors is an integer number (3333743852).

Almost surely, 2^10001231553 is an apocalyptic number.

It is an amenable number.

10001231553 is a deficient number, since it is larger than the sum of its proper divisors (3333743855).

10001231553 is an equidigital number, since it uses as much as digits as its factorization.

10001231553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333743854.

The product of its (nonzero) digits is 450, while the sum is 21.

Adding to 10001231553 its reverse (35513210001), we get a palindrome (45514441554).

The spelling of 10001231553 in words is "ten billion, one million, two hundred thirty-one thousand, five hundred fifty-three".