87958085978 has 16 divisors (see below), whose sum is σ = 150903214080. Its totient is φ = 37666841616.

The previous prime is 87958085977. The next prime is 87958086019.

It is a happy number.

87958085978 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (87958085977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2438201 + ... + 2474012.

It is an arithmetic number, because the mean of its divisors is an integer number (9431450880).

Almost surely, 2^87958085978 is an apocalyptic number.

87958085978 is a deficient number, since it is larger than the sum of its proper divisors (62945128102).

87958085978 is a wasteful number, since it uses less digits than its factorization.

87958085978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4913501.

The product of its (nonzero) digits is 406425600, while the sum is 74.

The spelling of 87958085978 in words is "eighty-seven billion, nine hundred fifty-eight million, eighty-five thousand, nine hundred seventy-eight".