4005990838551 has 32 divisors (see below), whose sum is σ = 5957088299008. Its totient is φ = 2377930504320.

The previous prime is 4005990838483. The next prime is 4005990838561. The reversal of 4005990838551 is 1558380995004.

It is a happy number.

It is not a de Polignac number, because 4005990838551 - 2⁴¹ = 1806967582999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4005990838491 and 4005990838500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005990838561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5025376 + ... + 5767701.

It is an arithmetic number, because the mean of its divisors is an integer number (186159009344).

Almost surely, 2^{4005990838551} is an apocalyptic number.

4005990838551 is a deficient number, since it is larger than the sum of its proper divisors (1951097460457).

4005990838551 is a wasteful number, since it uses less digits than its factorization.

4005990838551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10793431.

The product of its (nonzero) digits is 7776000, while the sum is 57.

The spelling of 4005990838551 in words is "four trillion, five billion, nine hundred ninety million, eight hundred thirty-eight thousand, five hundred fifty-one".