87418638612638 has 8 divisors (see below), whose sum is σ = 131128008174288. Its totient is φ = 43709302554544.

The previous prime is 87418638612521. The next prime is 87418638612659. The reversal of 87418638612638 is 83621683681478.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292631 + ... + 13225842.

It is an arithmetic number, because the mean of its divisors is an integer number (16391001021786).

Almost surely, 2^{87418638612638} is an apocalyptic number.

87418638612638 is a deficient number, since it is larger than the sum of its proper divisors (43709369561650).

87418638612638 is a wasteful number, since it uses less digits than its factorization.

87418638612638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16751778.

The product of its digits is 445906944, while the sum is 71.

The spelling of 87418638612638 in words is "eighty-seven trillion, four hundred eighteen billion, six hundred thirty-eight million, six hundred twelve thousand, six hundred thirty-eight".