98887544431 has 12 divisors (see below), whose sum is σ = 107088598800. Its totient is φ = 91272979200.

The previous prime is 98887544387. The next prime is 98887544479. The reversal of 98887544431 is 13444578889.

It is not a de Polignac number, because 98887544431 - 2⁷ = 98887544303 is a prime.

It is a super-2 number, since 2×98887544431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 98887544431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98887544131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3093870 + ... + 3125668.

It is an arithmetic number, because the mean of its divisors is an integer number (8924049900).

Almost surely, 2^98887544431 is an apocalyptic number.

98887544431 is a deficient number, since it is larger than the sum of its proper divisors (8201054369).

98887544431 is a wasteful number, since it uses less digits than its factorization.

98887544431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50226 (or 50213 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 61.

The spelling of 98887544431 in words is "ninety-eight billion, eight hundred eighty-seven million, five hundred forty-four thousand, four hundred thirty-one".