11401543453 has 4 divisors (see below), whose sum is σ = 11402198208. Its totient is φ = 11400888700.

The previous prime is 11401543429. The next prime is 11401543481. The reversal of 11401543453 is 35434510411.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35434510411 = 127 ⋅279011893.

It is a cyclic number.

It is not a de Polignac number, because 11401543453 - 2¹⁷ = 11401412381 is a prime.

It is a super-2 number, since 2×11401543453² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11401543403) 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, 300523 + ... + 336328.

It is an arithmetic number, because the mean of its divisors is an integer number (2850549552).

Almost surely, 2^11401543453 is an apocalyptic number.

It is an amenable number.

11401543453 is a deficient number, since it is larger than the sum of its proper divisors (654755).

11401543453 is an equidigital number, since it uses as much as digits as its factorization.

11401543453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654754.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 11401543453 in words is "eleven billion, four hundred one million, five hundred forty-three thousand, four hundred fifty-three".