11540639948545 has 8 divisors (see below), whose sum is σ = 14577650461440. Its totient is φ = 8746590276720.

The previous prime is 11540639948543. The next prime is 11540639948549. The reversal of 11540639948545 is 54584993604511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11540639948545 - 2¹ = 11540639948543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11540639948543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60740210161 + ... + 60740210350.

It is an arithmetic number, because the mean of its divisors is an integer number (1822206307680).

Almost surely, 2^{11540639948545} is an apocalyptic number.

It is an amenable number.

11540639948545 is a deficient number, since it is larger than the sum of its proper divisors (3037010512895).

11540639948545 is a wasteful number, since it uses less digits than its factorization.

11540639948545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121480420535.

The product of its (nonzero) digits is 93312000, while the sum is 64.

The spelling of 11540639948545 in words is "eleven trillion, five hundred forty billion, six hundred thirty-nine million, nine hundred forty-eight thousand, five hundred forty-five".