85434618830 has 24 divisors (see below), whose sum is σ = 169033454856. Its totient is φ = 31067133680.

The previous prime is 85434618827. The next prime is 85434618851. The reversal of 85434618830 is 3881643458.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35302352 + ... + 35304771.

It is an arithmetic number, because the mean of its divisors is an integer number (7043060619).

Almost surely, 2^85434618830 is an apocalyptic number.

85434618830 is a deficient number, since it is larger than the sum of its proper divisors (83598836026).

85434618830 is a wasteful number, since it uses less digits than its factorization.

85434618830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70607152 (or 70607141 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 50.

The spelling of 85434618830 in words is "eighty-five billion, four hundred thirty-four million, six hundred eighteen thousand, eight hundred thirty".