89144389551947 has 2 divisors, whose sum is σ = 89144389551948. Its totient is φ = 89144389551946.

The previous prime is 89144389551887. The next prime is 89144389551953. The reversal of 89144389551947 is 74915598344198.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89144389551947 is a prime.

It is a super-2 number, since 2×89144389551947² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89144389556947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44572194775973 + 44572194775974.

It is an arithmetic number, because the mean of its divisors is an integer number (44572194775974).

Almost surely, 2^{89144389551947} is an apocalyptic number.

89144389551947 is a deficient number, since it is larger than the sum of its proper divisors (1).

89144389551947 is an equidigital number, since it uses as much as digits as its factorization.

89144389551947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1567641600, while the sum is 77.

The spelling of 89144389551947 in words is "eighty-nine trillion, one hundred forty-four billion, three hundred eighty-nine million, five hundred fifty-one thousand, nine hundred forty-seven".