87438109975 has 24 divisors (see below), whose sum is σ = 108664920000. Its totient is φ = 69794787840.

The previous prime is 87438109949. The next prime is 87438109987. The reversal of 87438109975 is 57990183478.

It is not a de Polignac number, because 87438109975 - 2⁹ = 87438109463 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27246171 + ... + 27249379.

It is an arithmetic number, because the mean of its divisors is an integer number (4527705000).

Almost surely, 2^87438109975 is an apocalyptic number.

87438109975 is a deficient number, since it is larger than the sum of its proper divisors (21226810025).

87438109975 is a wasteful number, since it uses less digits than its factorization.

87438109975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5307 (or 5302 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 61.

The spelling of 87438109975 in words is "eighty-seven billion, four hundred thirty-eight million, one hundred nine thousand, nine hundred seventy-five".