4144636421111 has 4 divisors (see below), whose sum is σ = 4144705987800. Its totient is φ = 4144566854424.

The previous prime is 4144636421063. The next prime is 4144636421147. The reversal of 4144636421111 is 1111246364414.

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 4144636421111 - 2³⁴ = 4127456551927 is a prime.

It is a super-2 number, since 2×4144636421111² (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 (4144636421311) 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, 34693901 + ... + 34813158.

It is an arithmetic number, because the mean of its divisors is an integer number (1036176496950).

Almost surely, 2^{4144636421111} is an apocalyptic number.

4144636421111 is a deficient number, since it is larger than the sum of its proper divisors (69566689).

4144636421111 is an equidigital number, since it uses as much as digits as its factorization.

4144636421111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69566688.

The product of its digits is 55296, while the sum is 38.

The spelling of 4144636421111 in words is "four trillion, one hundred forty-four billion, six hundred thirty-six million, four hundred twenty-one thousand, one hundred eleven".