285961349080 has 128 divisors (see below), whose sum is σ = 740619936000. Its totient is φ = 98276682240.

The previous prime is 285961349039. The next prime is 285961349087. The reversal of 285961349080 is 80943169582.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285961349087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3462022 + ... + 3543658.

It is an arithmetic number, because the mean of its divisors is an integer number (5786093250).

Almost surely, 2^285961349080 is an apocalyptic number.

285961349080 is a gapful number since it is divisible by the number (20) 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 285961349080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370309968000).

285961349080 is an abundant number, since it is smaller than the sum of its proper divisors (454658586920).

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

285961349080 is a wasteful number, since it uses less digits than its factorization.

285961349080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82097 (or 82093 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 285961349080 in words is "two hundred eighty-five billion, nine hundred sixty-one million, three hundred forty-nine thousand, eighty".