6411408990898 has 8 divisors (see below), whose sum is σ = 9617126732460. Its totient is φ = 3205700080080.

The previous prime is 6411408990869. The next prime is 6411408990977. The reversal of 6411408990898 is 8980998041146.

It can be written as a sum of positive squares in 2 ways, for example, as 5194784548849 + 1216624442049 = 2279207^2 + 1103007^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6411408990898² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82588 + ... + 3581848.

Almost surely, 2^{6411408990898} is an apocalyptic number.

6411408990898 is a deficient number, since it is larger than the sum of its proper divisors (3205717741562).

6411408990898 is a wasteful number, since it uses less digits than its factorization.

6411408990898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4415372.

The product of its (nonzero) digits is 35831808, while the sum is 67.

The spelling of 6411408990898 in words is "six trillion, four hundred eleven billion, four hundred eight million, nine hundred ninety thousand, eight hundred ninety-eight".