11540453501 has 4 divisors (see below), whose sum is σ = 11542013532. Its totient is φ = 11538893472.

The previous prime is 11540453489. The next prime is 11540453521. The reversal of 11540453501 is 10535404511.

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 7098231001 + 4442222500 = 84251^2 + 66650^2 .

It is a cyclic number.

It is not a de Polignac number, because 11540453501 - 2²² = 11536259197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11540453521) 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, 768866 + ... + 783731.

It is an arithmetic number, because the mean of its divisors is an integer number (2885503383).

Almost surely, 2^11540453501 is an apocalyptic number.

It is an amenable number.

11540453501 is a deficient number, since it is larger than the sum of its proper divisors (1560031).

11540453501 is an equidigital number, since it uses as much as digits as its factorization.

11540453501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560030.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 11540453501 in words is "eleven billion, five hundred forty million, four hundred fifty-three thousand, five hundred one".