100081312545 has 32 divisors (see below), whose sum is σ = 167473152000. Its totient is φ = 50939596224.

The previous prime is 100081312523. The next prime is 100081312553. The reversal of 100081312545 is 545213180001.

It is not a de Polignac number, because 100081312545 - 2¹² = 100081308449 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178945 + ... + 481854.

It is an arithmetic number, because the mean of its divisors is an integer number (5233536000).

Almost surely, 2^100081312545 is an apocalyptic number.

100081312545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100081312545 is a deficient number, since it is larger than the sum of its proper divisors (67391839455).

100081312545 is a wasteful number, since it uses less digits than its factorization.

100081312545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661269.

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 100081312545 its reverse (545213180001), we get a palindrome (645294492546).

The spelling of 100081312545 in words is "one hundred billion, eighty-one million, three hundred twelve thousand, five hundred forty-five".