2164406644046 has 4 divisors (see below), whose sum is σ = 3246609966072. Its totient is φ = 1082203322022.

The previous prime is 2164406644033. The next prime is 2164406644063. The reversal of 2164406644046 is 6404466044612.

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

It is a super-2 number, since 2×2164406644046² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541101661010 + ... + 541101661013.

It is an arithmetic number, because the mean of its divisors is an integer number (811652491518).

Almost surely, 2^{2164406644046} is an apocalyptic number.

2164406644046 is a deficient number, since it is larger than the sum of its proper divisors (1082203322026).

2164406644046 is a wasteful number, since it uses less digits than its factorization.

2164406644046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082203322025.

The product of its (nonzero) digits is 2654208, while the sum is 47.

The spelling of 2164406644046 in words is "two trillion, one hundred sixty-four billion, four hundred six million, six hundred forty-four thousand, forty-six".