87078827490 has 32 divisors (see below), whose sum is σ = 221282668800. Its totient is φ = 21855078144.

The previous prime is 87078827483. The next prime is 87078827491. The reversal of 87078827490 is 9472887078.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87078827491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85370890 + ... + 85371909.

It is an arithmetic number, because the mean of its divisors is an integer number (6915083400).

Almost surely, 2^87078827490 is an apocalyptic number.

87078827490 is an abundant number, since it is smaller than the sum of its proper divisors (134203841310).

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

87078827490 is a wasteful number, since it uses less digits than its factorization.

87078827490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170742826.

The product of its (nonzero) digits is 12644352, while the sum is 60.

The spelling of 87078827490 in words is "eighty-seven billion, seventy-eight million, eight hundred twenty-seven thousand, four hundred ninety".