1098128479139 has 4 divisors (see below), whose sum is σ = 1098163762080. Its totient is φ = 1098093196200.

The previous prime is 1098128479103. The next prime is 1098128479141. The reversal of 1098128479139 is 9319748218901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1098128479139 - 2²⁰ = 1098127430563 is a prime.

It is a super-2 number, since 2×1098128479139² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098128439139) 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, 17594744 + ... + 17657045.

It is an arithmetic number, because the mean of its divisors is an integer number (274540940520).

Almost surely, 2^{1098128479139} is an apocalyptic number.

1098128479139 is a deficient number, since it is larger than the sum of its proper divisors (35282941).

1098128479139 is an equidigital number, since it uses as much as digits as its factorization.

1098128479139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35282940.

The product of its (nonzero) digits is 7838208, while the sum is 62.

The spelling of 1098128479139 in words is "one trillion, ninety-eight billion, one hundred twenty-eight million, four hundred seventy-nine thousand, one hundred thirty-nine".