280675160640 has 1120 divisors, whose sum is σ = 1189627084800. Its totient is φ = 61466480640.

The previous prime is 280675160617. The next prime is 280675160641. The reversal of 280675160640 is 46061576082.

It is a tau number, because it is divible by the number of its divisors (1120).

It is a super-3 number, since 3×280675160640³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (280675160641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 781824781 + ... + 781825139.

It is an arithmetic number, because the mean of its divisors is an integer number (1062167040).

Almost surely, 2^280675160640 is an apocalyptic number.

280675160640 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 280675160640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594813542400).

280675160640 is an abundant number, since it is smaller than the sum of its proper divisors (908951924160).

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

280675160640 is a wasteful number, since it uses less digits than its factorization.

280675160640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 280675160640 in words is "two hundred eighty billion, six hundred seventy-five million, one hundred sixty thousand, six hundred forty".