98123890513 has 4 divisors (see below), whose sum is σ = 107044244208. Its totient is φ = 89203536820.

The previous prime is 98123890457. The next prime is 98123890531. The reversal of 98123890513 is 31509832189.

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-98123890513 is a prime.

It is a super-2 number, since 2×98123890513² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (98123800513) 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, 4460176831 + ... + 4460176852.

It is an arithmetic number, because the mean of its divisors is an integer number (26761061052).

Almost surely, 2^98123890513 is an apocalyptic number.

It is an amenable number.

98123890513 is a deficient number, since it is larger than the sum of its proper divisors (8920353695).

98123890513 is a wasteful number, since it uses less digits than its factorization.

98123890513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8920353694.

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 98123890513 in words is "ninety-eight billion, one hundred twenty-three million, eight hundred ninety thousand, five hundred thirteen".