89711144547 has 16 divisors (see below), whose sum is σ = 123747307680. Its totient is φ = 57741465600.

The previous prime is 89711144543. The next prime is 89711144563. The reversal of 89711144547 is 74544111798.

It is a happy number.

It is not a de Polignac number, because 89711144547 - 2² = 89711144543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89711144547.

It is not an unprimeable number, because it can be changed into a prime (89711144543) 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, 2377347 + ... + 2414787.

It is an arithmetic number, because the mean of its divisors is an integer number (7734206730).

Almost surely, 2^89711144547 is an apocalyptic number.

89711144547 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

89711144547 is a deficient number, since it is larger than the sum of its proper divisors (34036163133).

89711144547 is a wasteful number, since it uses less digits than its factorization.

89711144547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65014.

The product of its digits is 1128960, while the sum is 51.

The spelling of 89711144547 in words is "eighty-nine billion, seven hundred eleven million, one hundred forty-four thousand, five hundred forty-seven".