69874721280 has 1800 divisors, whose sum is σ = 327748171212. Its totient is φ = 14101807104.

The previous prime is 69874721261. The next prime is 69874721351. The reversal of 69874721280 is 8212747896.

It is a happy number.

69874721280 is a `hidden beast` number, since 6 + 9 + 87 + 472 + 12 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 65037240576 + 4837480704 = 255024^2 + 69552^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 3038031349 + ... + 3038031371.

Almost surely, 2^69874721280 is an apocalyptic number.

69874721280 is a gapful number since it is divisible by the number (60) 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 69874721280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163874085606).

69874721280 is an abundant number, since it is smaller than the sum of its proper divisors (257873449932).

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

69874721280 is a wasteful number, since it uses less digits than its factorization.

69874721280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

It can be divided in two parts, 698747 and 21280, that added together give a palindrome (720027).

The spelling of 69874721280 in words is "sixty-nine billion, eight hundred seventy-four million, seven hundred twenty-one thousand, two hundred eighty".