872445544278 has 128 divisors (see below), whose sum is σ = 2304208788480. Its totient is φ = 213205893120.

The previous prime is 872445544259. The next prime is 872445544339.

872445544278 is nontrivially palindromic in base 10.

872445544278 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×872445544278² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24871800 + ... + 24906852.

It is an arithmetic number, because the mean of its divisors is an integer number (18001631160).

Almost surely, 2^872445544278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 872445544278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1152104394240).

872445544278 is an abundant number, since it is smaller than the sum of its proper divisors (1431763244202).

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

872445544278 is a wasteful number, since it uses less digits than its factorization.

872445544278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38262.

The product of its digits is 80281600, while the sum is 60.

The spelling of 872445544278 in words is "eight hundred seventy-two billion, four hundred forty-five million, five hundred forty-four thousand, two hundred seventy-eight".