87544040429 has 4 divisors (see below), whose sum is σ = 92693689884. Its totient is φ = 82394390976.

The previous prime is 87544040413. The next prime is 87544040461. The reversal of 87544040429 is 92404044578.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55647866404 + 31896174025 = 235898^2 + 178595^2 .

It is a cyclic number.

It is not a de Polignac number, because 87544040429 - 2⁴ = 87544040413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87544042429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2574824702 + ... + 2574824735.

It is an arithmetic number, because the mean of its divisors is an integer number (23173422471).

Almost surely, 2^87544040429 is an apocalyptic number.

It is an amenable number.

87544040429 is a deficient number, since it is larger than the sum of its proper divisors (5149649455).

87544040429 is a wasteful number, since it uses less digits than its factorization.

87544040429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5149649454.

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 87544040429 in words is "eighty-seven billion, five hundred forty-four million, forty thousand, four hundred twenty-nine".