85840531224 has 192 divisors, whose sum is σ = 266381884800. Its totient is φ = 22916307456.

The previous prime is 85840531199. The next prime is 85840531241. The reversal of 85840531224 is 42213504858.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1604799 + ... + 1657425.

It is an arithmetic number, because the mean of its divisors is an integer number (1387405650).

Almost surely, 2^85840531224 is an apocalyptic number.

85840531224 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85840531224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133190942400).

85840531224 is an abundant number, since it is smaller than the sum of its proper divisors (180541353576).

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

85840531224 is a wasteful number, since it uses less digits than its factorization.

85840531224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52742 (or 52731 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 42.

The spelling of 85840531224 in words is "eighty-five billion, eight hundred forty million, five hundred thirty-one thousand, two hundred twenty-four".