87089072890 has 16 divisors (see below), whose sum is σ = 163575998208. Its totient is φ = 33321036496.

The previous prime is 87089072887. The next prime is 87089072893. The reversal of 87089072890 is 9827098078.

It is an interprime number because it is at equal distance from previous prime (87089072887) and next prime (87089072893).

It is not an unprimeable number, because it can be changed into a prime (87089072893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189323842 + ... + 189324301.

It is an arithmetic number, because the mean of its divisors is an integer number (10223499888).

Almost surely, 2^87089072890 is an apocalyptic number.

87089072890 is a deficient number, since it is larger than the sum of its proper divisors (76486925318).

87089072890 is a wasteful number, since it uses less digits than its factorization.

87089072890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378648173.

The product of its (nonzero) digits is 4064256, while the sum is 58.

The spelling of 87089072890 in words is "eighty-seven billion, eighty-nine million, seventy-two thousand, eight hundred ninety".