87320388750263 has 4 divisors (see below), whose sum is σ = 87341629423008. Its totient is φ = 87299148077520.

The previous prime is 87320388750167. The next prime is 87320388750407. The reversal of 87320388750263 is 36205788302378.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87320388750263 - 2⁴⁰ = 86220877122487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87320388750196 and 87320388750205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87320388750163) 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, 10620330206 + ... + 10620338427.

It is an arithmetic number, because the mean of its divisors is an integer number (21835407355752).

Almost surely, 2^{87320388750263} is an apocalyptic number.

87320388750263 is a deficient number, since it is larger than the sum of its proper divisors (21240672745).

87320388750263 is a wasteful number, since it uses less digits than its factorization.

87320388750263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21240672744.

The product of its (nonzero) digits is 81285120, while the sum is 62.

The spelling of 87320388750263 in words is "eighty-seven trillion, three hundred twenty billion, three hundred eighty-eight million, seven hundred fifty thousand, two hundred sixty-three".