4011544631623 has 4 divisors (see below), whose sum is σ = 4119964756840. Its totient is φ = 3903124506408.

The previous prime is 4011544631587. The next prime is 4011544631657. The reversal of 4011544631623 is 3261364451104.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4011544631623 is a prime.

It is a super-2 number, since 2×4011544631623² (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 (4011544641623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54210062553 + ... + 54210062626.

It is an arithmetic number, because the mean of its divisors is an integer number (1029991189210).

Almost surely, 2^{4011544631623} is an apocalyptic number.

4011544631623 is a deficient number, since it is larger than the sum of its proper divisors (108420125217).

4011544631623 is a wasteful number, since it uses less digits than its factorization.

4011544631623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108420125216.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 4011544631623 in words is "four trillion, eleven billion, five hundred forty-four million, six hundred thirty-one thousand, six hundred twenty-three".