98777977977789 has 64 divisors (see below), whose sum is σ = 160165558425600. Its totient is φ = 59668824700800.

The previous prime is 98777977977773. The next prime is 98777977977793.

98777977977789 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 98777977977789 - 2⁴ = 98777977977773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98777977977089) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1824498282 + ... + 1824552420.

It is an arithmetic number, because the mean of its divisors is an integer number (2502586850400).

Almost surely, 2^{98777977977789} is an apocalyptic number.

98777977977789 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

98777977977789 is a deficient number, since it is larger than the sum of its proper divisors (61387580447811).

98777977977789 is a wasteful number, since it uses less digits than its factorization.

98777977977789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74223 (or 74217 counting only the distinct ones).

The product of its digits is 2420662999104, while the sum is 108.

The spelling of 98777977977789 in words is "ninety-eight trillion, seven hundred seventy-seven billion, nine hundred seventy-seven million, nine hundred seventy-seven thousand, seven hundred eighty-nine".