275345656320 has 320 divisors, whose sum is σ = 1011588754176. Its totient is φ = 62586224640.

The previous prime is 275345656319. The next prime is 275345656349. The reversal of 275345656320 is 23656543572.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 275345656320.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9716412 + ... + 9744708.

Almost surely, 2^275345656320 is an apocalyptic number.

275345656320 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 275345656320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (505794377088).

275345656320 is an abundant number, since it is smaller than the sum of its proper divisors (736243097856).

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

275345656320 is a wasteful number, since it uses less digits than its factorization.

275345656320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28511 (or 28495 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 48.

The spelling of 275345656320 in words is "two hundred seventy-five billion, three hundred forty-five million, six hundred fifty-six thousand, three hundred twenty".