87120690854 has 16 divisors (see below), whose sum is σ = 133815897600. Its totient is φ = 42516842760.

The previous prime is 87120690851. The next prime is 87120690871. The reversal of 87120690854 is 45809602178.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87120690851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241742 + ... + 482369.

It is an arithmetic number, because the mean of its divisors is an integer number (8363493600).

Almost surely, 2^87120690854 is an apocalyptic number.

87120690854 is a deficient number, since it is larger than the sum of its proper divisors (46695206746).

87120690854 is a wasteful number, since it uses less digits than its factorization.

87120690854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725555.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 87120690854 in words is "eighty-seven billion, one hundred twenty million, six hundred ninety thousand, eight hundred fifty-four".