87155378814 has 32 divisors (see below), whose sum is σ = 203450858496. Its totient is φ = 24371716320.

The previous prime is 87155378803. The next prime is 87155378867. The reversal of 87155378814 is 41887355178.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22073857 + ... + 22077804.

It is an arithmetic number, because the mean of its divisors is an integer number (6357839328).

Almost surely, 2^87155378814 is an apocalyptic number.

87155378814 is an abundant number, since it is smaller than the sum of its proper divisors (116295479682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87155378814 is a wasteful number, since it uses less digits than its factorization.

87155378814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44151720.

The product of its digits is 7526400, while the sum is 57.

The spelling of 87155378814 in words is "eighty-seven billion, one hundred fifty-five million, three hundred seventy-eight thousand, eight hundred fourteen".