87923832978 has 8 divisors (see below), whose sum is σ = 175847665968. Its totient is φ = 29307944324.

The previous prime is 87923832977. The next prime is 87923833033.

It is a happy number.

87923832978 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

87923832978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (87923832977) 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 3 ways as a sum of consecutive naturals, for example, 7326986076 + ... + 7326986087.

It is an arithmetic number, because the mean of its divisors is an integer number (21980958246).

Almost surely, 2^87923832978 is an apocalyptic number.

87923832978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

87923832978 is a wasteful number, since it uses less digits than its factorization.

87923832978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14653972168.

The product of its digits is 73156608, while the sum is 66.

The spelling of 87923832978 in words is "eighty-seven billion, nine hundred twenty-three million, eight hundred thirty-two thousand, nine hundred seventy-eight".