867255137280 has 704 divisors, whose sum is σ = 3570906017280. Its totient is φ = 195498344448.

The previous prime is 867255137249. The next prime is 867255137341. The reversal of 867255137280 is 82731552768.

867255137280 is a `hidden beast` number, since 8 + 6 + 7 + 2 + 551 + 3 + 7 + 2 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 70634502 + ... + 70646778.

Almost surely, 2^867255137280 is an apocalyptic number.

867255137280 is a gapful number since it is divisible by the number (80) 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 867255137280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1785453008640).

867255137280 is an abundant number, since it is smaller than the sum of its proper divisors (2703650880000).

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

867255137280 is a wasteful number, since it uses less digits than its factorization.

867255137280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12391 (or 12367 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 867255137280 in words is "eight hundred sixty-seven billion, two hundred fifty-five million, one hundred thirty-seven thousand, two hundred eighty".