85531430358 has 64 divisors (see below), whose sum is σ = 207678435840. Its totient is φ = 25877426400.

The previous prime is 85531430339. The next prime is 85531430377. The reversal of 85531430358 is 85303413558.

85531430358 is a `hidden beast` number, since 8 + 553 + 1 + 43 + 0 + 3 + 58 = 666.

It is an interprime number because it is at equal distance from previous prime (85531430339) and next prime (85531430377).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260716 + ... + 488912.

It is an arithmetic number, because the mean of its divisors is an integer number (3244975560).

Almost surely, 2^85531430358 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85531430358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103839217920).

85531430358 is an abundant number, since it is smaller than the sum of its proper divisors (122147005482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85531430358 is a wasteful number, since it uses less digits than its factorization.

85531430358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228850 (or 228844 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 85531430358 in words is "eighty-five billion, five hundred thirty-one million, four hundred thirty thousand, three hundred fifty-eight".