6400805106121 has 8 divisors (see below), whose sum is σ = 6409251663584. Its totient is φ = 6392362903200.

The previous prime is 6400805106107. The next prime is 6400805106181. The reversal of 6400805106121 is 1216015080046.

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

It is a cyclic number.

It is not a de Polignac number, because 6400805106121 - 2¹¹ = 6400805104073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6400805106181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1858390 + ... + 4031776.

It is an arithmetic number, because the mean of its divisors is an integer number (801156457948).

Almost surely, 2^{6400805106121} is an apocalyptic number.

It is an amenable number.

6400805106121 is a deficient number, since it is larger than the sum of its proper divisors (8446557463).

6400805106121 is a wasteful number, since it uses less digits than its factorization.

6400805106121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177271.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 6400805106121 in words is "six trillion, four hundred billion, eight hundred five million, one hundred six thousand, one hundred twenty-one".