98647378515 has 24 divisors (see below), whose sum is σ = 195415759968. Its totient is φ = 45095944320.

The previous prime is 98647378513. The next prime is 98647378631. The reversal of 98647378515 is 51587374689.

98647378515 is a `hidden beast` number, since 9 + 8 + 6 + 47 + 3 + 78 + 515 = 666.

It is not a de Polignac number, because 98647378515 - 2¹ = 98647378513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (98647378513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156582826 + ... + 156583455.

It is an arithmetic number, because the mean of its divisors is an integer number (8142323332).

Almost surely, 2^98647378515 is an apocalyptic number.

98647378515 is a deficient number, since it is larger than the sum of its proper divisors (96768381453).

98647378515 is a wasteful number, since it uses less digits than its factorization.

98647378515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313166299 (or 313166296 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 63.

The spelling of 98647378515 in words is "ninety-eight billion, six hundred forty-seven million, three hundred seventy-eight thousand, five hundred fifteen".