98718129877 has 4 divisors (see below), whose sum is σ = 100070433100. Its totient is φ = 97365826656.

The previous prime is 98718129857. The next prime is 98718129883. The reversal of 98718129877 is 77892181789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77892181789 = 59 ⋅1320206471.

It can be written as a sum of positive squares in 2 ways, for example, as 81607920241 + 17110209636 = 285671^2 + 130806^2 .

It is a cyclic number.

It is not a de Polignac number, because 98718129877 - 2³⁵ = 64358391509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98718129857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676151502 + ... + 676151647.

It is an arithmetic number, because the mean of its divisors is an integer number (25017608275).

Almost surely, 2^98718129877 is an apocalyptic number.

It is an amenable number.

98718129877 is a deficient number, since it is larger than the sum of its proper divisors (1352303223).

98718129877 is a wasteful number, since it uses less digits than its factorization.

98718129877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352303222.

The product of its digits is 28449792, while the sum is 67.

The spelling of 98718129877 in words is "ninety-eight billion, seven hundred eighteen million, one hundred twenty-nine thousand, eight hundred seventy-seven".