87132601640 has 48 divisors (see below), whose sum is σ = 228056253300. Its totient is φ = 29874034176.

The previous prime is 87132601631. The next prime is 87132601651. The reversal of 87132601640 is 4610623178.

It can be written as a sum of positive squares in 2 ways, for example, as 84870838276 + 2261763364 = 291326^2 + 47558^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87132601594 and 87132601603.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22225745 + ... + 22229664.

Almost surely, 2^87132601640 is an apocalyptic number.

It is an amenable number.

87132601640 is an abundant number, since it is smaller than the sum of its proper divisors (140923651660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87132601640 is a wasteful number, since it uses less digits than its factorization.

87132601640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44455434 (or 44455423 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 87132601640 in words is "eighty-seven billion, one hundred thirty-two million, six hundred one thousand, six hundred forty".