98978255287989 has 16 divisors (see below), whose sum is σ = 164535281518080. Its totient is φ = 51417275474160.

The previous prime is 98978255287937. The next prime is 98978255287993.

It is a happy number.

98978255287989 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 98978255287989 - 2⁸ = 98978255287733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 98978255287896 and 98978255287905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98978255287999) 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, 214238647579 + ... + 214238648040.

It is an arithmetic number, because the mean of its divisors is an integer number (10283455094880).

Almost surely, 2^{98978255287989} is an apocalyptic number.

It is an amenable number.

98978255287989 is a deficient number, since it is larger than the sum of its proper divisors (65557026230091).

98978255287989 is a wasteful number, since it uses less digits than its factorization.

98978255287989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428477295640.

The product of its digits is 131681894400, while the sum is 96.

The spelling of 98978255287989 in words is "ninety-eight trillion, nine hundred seventy-eight billion, two hundred fifty-five million, two hundred eighty-seven thousand, nine hundred eighty-nine".