11919548643 has 16 divisors (see below), whose sum is σ = 15930722976. Its totient is φ = 7927395840.

The previous prime is 11919548611. The next prime is 11919548687. The reversal of 11919548643 is 34684591911.

It is a happy number.

It is not a de Polignac number, because 11919548643 - 2⁵ = 11919548611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11919540643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2611083 + ... + 2615643.

It is an arithmetic number, because the mean of its divisors is an integer number (995670186).

Almost surely, 2^11919548643 is an apocalyptic number.

11919548643 is a deficient number, since it is larger than the sum of its proper divisors (4011174333).

11919548643 is a wasteful number, since it uses less digits than its factorization.

11919548643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6454.

The product of its digits is 933120, while the sum is 51.

The spelling of 11919548643 in words is "eleven billion, nine hundred nineteen million, five hundred forty-eight thousand, six hundred forty-three".