98778447357 has 4 divisors (see below), whose sum is σ = 131704596480. Its totient is φ = 65852298236.

The previous prime is 98778447311. The next prime is 98778447359. The reversal of 98778447357 is 75374487789.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98778447357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 98778447291 and 98778447300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98778447359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16463074557 + ... + 16463074562.

It is an arithmetic number, because the mean of its divisors is an integer number (32926149120).

Almost surely, 2^98778447357 is an apocalyptic number.

It is an amenable number.

98778447357 is a deficient number, since it is larger than the sum of its proper divisors (32926149123).

98778447357 is a wasteful number, since it uses less digits than its factorization.

98778447357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32926149122.

The product of its digits is 331914240, while the sum is 69.

The spelling of 98778447357 in words is "ninety-eight billion, seven hundred seventy-eight million, four hundred forty-seven thousand, three hundred fifty-seven".