287222154464 has 96 divisors (see below), whose sum is σ = 649641182400. Its totient is φ = 122450227200.

The previous prime is 287222154463. The next prime is 287222154473. The reversal of 287222154464 is 464451222782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287222154463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92382542 + ... + 92385650.

It is an arithmetic number, because the mean of its divisors is an integer number (6767095650).

Almost surely, 2^287222154464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287222154464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324820591200).

287222154464 is an abundant number, since it is smaller than the sum of its proper divisors (362419027936).

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

287222154464 is a wasteful number, since it uses less digits than its factorization.

287222154464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5156 (or 5148 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 47.

The spelling of 287222154464 in words is "two hundred eighty-seven billion, two hundred twenty-two million, one hundred fifty-four thousand, four hundred sixty-four".