85439653954 has 8 divisors (see below), whose sum is σ = 128161526220. Its totient is φ = 42719145216.

The previous prime is 85439653931. The next prime is 85439653993. The reversal of 85439653954 is 45935693458.

It can be written as a sum of positive squares in 2 ways, for example, as 76356610929 + 9083043025 = 276327^2 + 95305^2 .

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 = 85439653892 and 85439653901.

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, 166359 + ... + 445594.

Almost surely, 2^85439653954 is an apocalyptic number.

85439653954 is a deficient number, since it is larger than the sum of its proper divisors (42721872266).

85439653954 is a wasteful number, since it uses less digits than its factorization.

85439653954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681764.

The product of its digits is 69984000, while the sum is 61.

The spelling of 85439653954 in words is "eighty-five billion, four hundred thirty-nine million, six hundred fifty-three thousand, nine hundred fifty-four".