98981473861 has 4 divisors (see below), whose sum is σ = 99346719424. Its totient is φ = 98616228300.

The previous prime is 98981473847. The next prime is 98981473867. The reversal of 98981473861 is 16837418989.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16837418989 = 1721 ⋅9783509.

It is a cyclic number.

It is not a de Polignac number, because 98981473861 - 2¹⁵ = 98981441093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 98981473793 and 98981473802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98981473867) 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, 182622375 + ... + 182622916.

It is an arithmetic number, because the mean of its divisors is an integer number (24836679856).

Almost surely, 2^98981473861 is an apocalyptic number.

It is an amenable number.

98981473861 is a deficient number, since it is larger than the sum of its proper divisors (365245563).

98981473861 is a wasteful number, since it uses less digits than its factorization.

98981473861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365245562.

The product of its digits is 20901888, while the sum is 64.

The spelling of 98981473861 in words is "ninety-eight billion, nine hundred eighty-one million, four hundred seventy-three thousand, eight hundred sixty-one".