87435072549 has 24 divisors (see below), whose sum is σ = 138083400000. Its totient is φ = 52872906240.

The previous prime is 87435072523. The next prime is 87435072623. The reversal of 87435072549 is 94527053478.

It is a happy number.

87435072549 is a `hidden beast` number, since 8 + 7 + 43 + 50 + 7 + 2 + 549 = 666.

It is not a de Polignac number, because 87435072549 - 2⁷ = 87435072421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87435072495 and 87435072504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87435072509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 939049 + ... + 1027950.

It is an arithmetic number, because the mean of its divisors is an integer number (5753475000).

Almost surely, 2^87435072549 is an apocalyptic number.

It is an amenable number.

87435072549 is a deficient number, since it is larger than the sum of its proper divisors (50648327451).

87435072549 is a wasteful number, since it uses less digits than its factorization.

87435072549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967465 (or 1967462 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 87435072549 in words is "eighty-seven billion, four hundred thirty-five million, seventy-two thousand, five hundred forty-nine".