87989098978 has 16 divisors (see below), whose sum is σ = 146131151904. Its totient is φ = 39398103360.

The previous prime is 87989098963. The next prime is 87989099071.

87989098978 is nontrivially palindromic in base 10.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29845575 + ... + 29848522.

It is an arithmetic number, because the mean of its divisors is an integer number (9133196994).

Almost surely, 2^87989098978 is an apocalyptic number.

87989098978 is a deficient number, since it is larger than the sum of its proper divisors (58142052926).

87989098978 is a wasteful number, since it uses less digits than its factorization.

87989098978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59694177.

The product of its (nonzero) digits is 1316818944, while the sum is 82.

The spelling of 87989098978 in words is "eighty-seven billion, nine hundred eighty-nine million, ninety-eight thousand, nine hundred seventy-eight".