981276472836 has 135 divisors (see below), whose sum is σ = 2820219249463. Its totient is φ = 297297071280.

The previous prime is 981276472823. The next prime is 981276472867. The reversal of 981276472836 is 638274672189.

The square root of 981276472836 is 990594.

It is a perfect power (a square), and thus also a powerful number.

981276472836 is a `hidden beast` number, since 9 + 8 + 12 + 76 + 472 + 83 + 6 = 666.

It is a super-2 number, since 2×981276472836² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 196135111 + ... + 196140113.

Almost surely, 2^981276472836 is an apocalyptic number.

981276472836 is the 990594-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981276472836

981276472836 is an abundant number, since it is smaller than the sum of its proper divisors (1838942776627).

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

981276472836 is an equidigital number, since it uses as much as digits as its factorization.

981276472836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10044 (or 5019 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 981276472836 in words is "nine hundred eighty-one billion, two hundred seventy-six million, four hundred seventy-two thousand, eight hundred thirty-six".