11540145542 has 4 divisors (see below), whose sum is σ = 17310218316. Its totient is φ = 5770072770.

The previous prime is 11540145497. The next prime is 11540145553. The reversal of 11540145542 is 24554104511.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 11540145499 and 11540145508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2885036384 + ... + 2885036387.

It is an arithmetic number, because the mean of its divisors is an integer number (4327554579).

Almost surely, 2^11540145542 is an apocalyptic number.

11540145542 is a deficient number, since it is larger than the sum of its proper divisors (5770072774).

11540145542 is an equidigital number, since it uses as much as digits as its factorization.

11540145542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770072773.

The product of its (nonzero) digits is 16000, while the sum is 32.

The spelling of 11540145542 in words is "eleven billion, five hundred forty million, one hundred forty-five thousand, five hundred forty-two".