87501034613 has 4 divisors (see below), whose sum is σ = 87503018988. Its totient is φ = 87499050240.

The previous prime is 87501034591. The next prime is 87501034633. The reversal of 87501034613 is 31643010578.

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 5535062404 + 81965972209 = 74398^2 + 286297^2 .

It is a cyclic number.

It is not a de Polignac number, because 87501034613 - 2⁶ = 87501034549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87501034633) 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 3 ways as a sum of consecutive naturals, for example, 924506 + ... + 1014747.

It is an arithmetic number, because the mean of its divisors is an integer number (21875754747).

Almost surely, 2^87501034613 is an apocalyptic number.

It is an amenable number.

87501034613 is a deficient number, since it is larger than the sum of its proper divisors (1984375).

87501034613 is a wasteful number, since it uses less digits than its factorization.

87501034613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984374.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 87501034613 in words is "eighty-seven billion, five hundred one million, thirty-four thousand, six hundred thirteen".