87390851623 has 8 divisors (see below), whose sum is σ = 88843305600. Its totient is φ = 85942754040.

The previous prime is 87390851591. The next prime is 87390851651. The reversal of 87390851623 is 32615809378.

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 87390851623 - 2⁵ = 87390851591 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 (87390851663) 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, 1048633 + ... + 1128898.

It is an arithmetic number, because the mean of its divisors is an integer number (11105413200).

Almost surely, 2^87390851623 is an apocalyptic number.

87390851623 is a deficient number, since it is larger than the sum of its proper divisors (1452453977).

87390851623 is a wasteful number, since it uses less digits than its factorization.

87390851623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178197.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 87390851623 in words is "eighty-seven billion, three hundred ninety million, eight hundred fifty-one thousand, six hundred twenty-three".