87932423978 has 8 divisors (see below), whose sum is σ = 150741298272. Its totient is φ = 37685324556.

The previous prime is 87932423977. The next prime is 87932423981.

87932423978 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×87932423978² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87932423978.

It is not an unprimeable number, because it can be changed into a prime (87932423977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3140443700 + ... + 3140443727.

It is an arithmetic number, because the mean of its divisors is an integer number (18842662284).

Almost surely, 2^87932423978 is an apocalyptic number.

87932423978 is a deficient number, since it is larger than the sum of its proper divisors (62808874294).

87932423978 is a wasteful number, since it uses less digits than its factorization.

87932423978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6280887436.

The product of its digits is 36578304, while the sum is 62.

The spelling of 87932423978 in words is "eighty-seven billion, nine hundred thirty-two million, four hundred twenty-three thousand, nine hundred seventy-eight".