260981421228 has 96 divisors (see below), whose sum is σ = 738469079040. Its totient is φ = 79048872000.

The previous prime is 260981421209. The next prime is 260981421247. The reversal of 260981421228 is 822124189062.

260981421228 is a `hidden beast` number, since 2 + 609 + 8 + 1 + 4 + 2 + 12 + 28 = 666.

It is an interprime number because it is at equal distance from previous prime (260981421209) and next prime (260981421247).

It is a super-2 number, since 2×260981421228² (a number of 24 digits) contains 22 as substring.

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, 2589093 + ... + 2688003.

It is an arithmetic number, because the mean of its divisors is an integer number (7692386240).

Almost surely, 2^260981421228 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 260981421228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369234539520).

260981421228 is an abundant number, since it is smaller than the sum of its proper divisors (477487657812).

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

260981421228 is a wasteful number, since it uses less digits than its factorization.

260981421228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101156 (or 101148 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 260981421228 in words is "two hundred sixty billion, nine hundred eighty-one million, four hundred twenty-one thousand, two hundred twenty-eight".