11187640562 has 16 divisors (see below), whose sum is σ = 19646589312. Its totient is φ = 4677758880.

The previous prime is 11187640489. The next prime is 11187640567. The reversal of 11187640562 is 26504678111.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (11187640567) 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 7 ways as a sum of consecutive naturals, for example, 9744758 + ... + 9745905.

It is an arithmetic number, because the mean of its divisors is an integer number (1227911832).

Almost surely, 2^11187640562 is an apocalyptic number.

11187640562 is a deficient number, since it is larger than the sum of its proper divisors (8458948750).

11187640562 is a wasteful number, since it uses less digits than its factorization.

11187640562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19490713.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 11187640562 in words is "eleven billion, one hundred eighty-seven million, six hundred forty thousand, five hundred sixty-two".