94987881081 has 6 divisors (see below), whose sum is σ = 137204717130. Its totient is φ = 63325254048.

The previous prime is 94987881061. The next prime is 94987881103. The reversal of 94987881081 is 18018878949.

It can be written as a sum of positive squares in only one way, i.e., 86000841081 + 8987040000 = 293259^2 + 94800^2 .

It is not a de Polignac number, because 94987881081 - 2⁵ = 94987881049 is a prime.

It is a super-2 number, since 2×94987881081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (94987881061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5277104496 + ... + 5277104513.

It is an arithmetic number, because the mean of its divisors is an integer number (22867452855).

Almost surely, 2^94987881081 is an apocalyptic number.

It is an amenable number.

94987881081 is a deficient number, since it is larger than the sum of its proper divisors (42216836049).

94987881081 is a wasteful number, since it uses less digits than its factorization.

94987881081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10554209015 (or 10554209012 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 63.

The spelling of 94987881081 in words is "ninety-four billion, nine hundred eighty-seven million, eight hundred eighty-one thousand, eighty-one".