85144449554 has 8 divisors (see below), whose sum is σ = 130686829680. Its totient is φ = 41582172996.

The previous prime is 85144449539. The next prime is 85144449569. The reversal of 85144449554 is 45594444158.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (85144449539) and next prime (85144449569).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 85144449496 and 85144449505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495025784 + ... + 495025955.

It is an arithmetic number, because the mean of its divisors is an integer number (16335853710).

Almost surely, 2^85144449554 is an apocalyptic number.

85144449554 is a deficient number, since it is larger than the sum of its proper divisors (45542380126).

85144449554 is a wasteful number, since it uses less digits than its factorization.

85144449554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990051784.

The product of its digits is 9216000, while the sum is 53.

The spelling of 85144449554 in words is "eighty-five billion, one hundred forty-four million, four hundred forty-nine thousand, five hundred fifty-four".