87398208947 has 32 divisors (see below), whose sum is σ = 105510384000. Its totient is φ = 70816370688.

The previous prime is 87398208943. The next prime is 87398209021. The reversal of 87398208947 is 74980289378.

It is not a de Polignac number, because 87398208947 - 2² = 87398208943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87398208943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2008679 + ... + 2051727.

It is an arithmetic number, because the mean of its divisors is an integer number (3297199500).

Almost surely, 2^87398208947 is an apocalyptic number.

87398208947 is a deficient number, since it is larger than the sum of its proper divisors (18112175053).

87398208947 is a wasteful number, since it uses less digits than its factorization.

87398208947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43295.

The product of its (nonzero) digits is 48771072, while the sum is 65.

The spelling of 87398208947 in words is "eighty-seven billion, three hundred ninety-eight million, two hundred eight thousand, nine hundred forty-seven".