87638462893 has 8 divisors (see below), whose sum is σ = 89126254880. Its totient is φ = 86152319280.

The previous prime is 87638462881. The next prime is 87638462903. The reversal of 87638462893 is 39826483678.

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 87638462893 - 2⁵ = 87638462861 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 (87638402893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304623 + ... + 517756.

It is an arithmetic number, because the mean of its divisors is an integer number (11140781860).

Almost surely, 2^87638462893 is an apocalyptic number.

It is an amenable number.

87638462893 is a deficient number, since it is larger than the sum of its proper divisors (1487791987).

87638462893 is a wasteful number, since it uses less digits than its factorization.

87638462893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824187.

The product of its digits is 83607552, while the sum is 64.

The spelling of 87638462893 in words is "eighty-seven billion, six hundred thirty-eight million, four hundred sixty-two thousand, eight hundred ninety-three".