81410926276 has 27 divisors (see below), whose sum is σ = 143449470829. Its totient is φ = 40427270288.

The previous prime is 81410926253. The next prime is 81410926277. The reversal of 81410926276 is 67262901418.

The square root of 81410926276 is 285326.

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

It can be written as a sum of positive squares in only one way, i.e., 39477716100 + 41933210176 = 198690^2 + 204776^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81410926277) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 102146310 + ... + 102147106.

Almost surely, 2^81410926276 is an apocalyptic number.

81410926276 is the 285326-th square number.

It is an amenable number.

81410926276 is a deficient number, since it is larger than the sum of its proper divisors (62038544553).

81410926276 is an frugal number, since it uses more digits than its factorization.

81410926276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 81410926276 in words is "eighty-one billion, four hundred ten million, nine hundred twenty-six thousand, two hundred seventy-six".