87490252587 has 6 divisors (see below), whose sum is σ = 116654353212. Its totient is φ = 58326493512.

The previous prime is 87490252567. The next prime is 87490252613. The reversal of 87490252587 is 78525209478.

It is not a de Polignac number, because 87490252587 - 2⁶ = 87490252523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87490252537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 426933 + ... + 597705.

It is an arithmetic number, because the mean of its divisors is an integer number (19442392202).

Almost surely, 2^87490252587 is an apocalyptic number.

87490252587 is a deficient number, since it is larger than the sum of its proper divisors (29164100625).

87490252587 is an frugal number, since it uses more digits than its factorization.

87490252587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341549 (or 170776 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 57.

The spelling of 87490252587 in words is "eighty-seven billion, four hundred ninety million, two hundred fifty-two thousand, five hundred eighty-seven".