3298944123781 has 4 divisors (see below), whose sum is σ = 3492999660492. Its totient is φ = 3104888587072.

The previous prime is 3298944123773. The next prime is 3298944123793. The reversal of 3298944123781 is 1873214498923.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1121976666756 + 2176967457025 = 1059234^2 + 1475455^2 .

It is a cyclic number.

It is not a de Polignac number, because 3298944123781 - 2³ = 3298944123773 is a prime.

It is a super-2 number, since 2×3298944123781² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3298944123281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97027768330 + ... + 97027768363.

It is an arithmetic number, because the mean of its divisors is an integer number (873249915123).

Almost surely, 2^{3298944123781} is an apocalyptic number.

It is an amenable number.

3298944123781 is a deficient number, since it is larger than the sum of its proper divisors (194055536711).

3298944123781 is a wasteful number, since it uses less digits than its factorization.

3298944123781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194055536710.

The product of its digits is 20901888, while the sum is 61.

The spelling of 3298944123781 in words is "three trillion, two hundred ninety-eight billion, nine hundred forty-four million, one hundred twenty-three thousand, seven hundred eighty-one".