11642558547 has 16 divisors (see below), whose sum is σ = 15679243008. Its totient is φ = 7683839520.

The previous prime is 11642558537. The next prime is 11642558549. The reversal of 11642558547 is 74585524611.

It is a happy number.

It is not a de Polignac number, because 11642558547 - 2⁷ = 11642558419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11642558496 and 11642558505.

It is not an unprimeable number, because it can be changed into a prime (11642558549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1770688 + ... + 1777250.

It is an arithmetic number, because the mean of its divisors is an integer number (979952688).

Almost surely, 2^11642558547 is an apocalyptic number.

11642558547 is a deficient number, since it is larger than the sum of its proper divisors (4036684461).

11642558547 is a wasteful number, since it uses less digits than its factorization.

11642558547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12410.

The product of its digits is 1344000, while the sum is 48.

The spelling of 11642558547 in words is "eleven billion, six hundred forty-two million, five hundred fifty-eight thousand, five hundred forty-seven".