87603313421 has 8 divisors (see below), whose sum is σ = 96643055544. Its totient is φ = 78892289280.

The previous prime is 87603313387. The next prime is 87603313429. The reversal of 87603313421 is 12431330678.

It can be written as a sum of positive squares in 4 ways, for example, as 113955625 + 87489357796 = 10675^2 + 295786^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87603313421 - 2²² = 87599119117 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 (87603313429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82178936 + ... + 82180001.

It is an arithmetic number, because the mean of its divisors is an integer number (12080381943).

Almost surely, 2^87603313421 is an apocalyptic number.

It is an amenable number.

87603313421 is a deficient number, since it is larger than the sum of its proper divisors (9039742123).

87603313421 is a wasteful number, since it uses less digits than its factorization.

87603313421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164358991.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 87603313421 in words is "eighty-seven billion, six hundred three million, three hundred thirteen thousand, four hundred twenty-one".