87945722829 has 24 divisors (see below), whose sum is σ = 128283929592. Its totient is φ = 58054026240.

The previous prime is 87945722803. The next prime is 87945722911. The reversal of 87945722829 is 92822754978.

87945722829 is a `hidden beast` number, since 87 + 9 + 457 + 22 + 82 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 19244070729 + 68701652100 = 138723^2 + 262110^2 .

It is not a de Polignac number, because 87945722829 - 2⁷ = 87945722701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87945722129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 996009 + ... + 1080705.

It is an arithmetic number, because the mean of its divisors is an integer number (5345163733).

Almost surely, 2^87945722829 is an apocalyptic number.

It is an amenable number.

87945722829 is a deficient number, since it is larger than the sum of its proper divisors (40338206763).

87945722829 is a wasteful number, since it uses less digits than its factorization.

87945722829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85837 (or 85834 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The spelling of 87945722829 in words is "eighty-seven billion, nine hundred forty-five million, seven hundred twenty-two thousand, eight hundred twenty-nine".