81128627830010 has 64 divisors (see below), whose sum is σ = 154952270589600. Its totient is φ = 30536047180800.

The previous prime is 81128627830001. The next prime is 81128627830037. The reversal of 81128627830010 is 1003872682118.

It can be written as a sum of positive squares in 16 ways, for example, as 258481744921 + 80870146085089 = 508411^2 + 8992783^2 .

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, 19109081 + ... + 22965500.

Almost surely, 2^{81128627830010} is an apocalyptic number.

81128627830010 is a deficient number, since it is larger than the sum of its proper divisors (73823642759590).

81128627830010 is a wasteful number, since it uses less digits than its factorization.

81128627830010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42074787.

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 81128627830010 in words is "eighty-one trillion, one hundred twenty-eight billion, six hundred twenty-seven million, eight hundred thirty thousand, ten".