4051612581623 has 2 divisors, whose sum is σ = 4051612581624. Its totient is φ = 4051612581622.

The previous prime is 4051612581617. The next prime is 4051612581647. The reversal of 4051612581623 is 3261852161504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4051612581623 - 2⁶ = 4051612581559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4051612580623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2025806290811 + 2025806290812.

It is an arithmetic number, because the mean of its divisors is an integer number (2025806290812).

Almost surely, 2^{4051612581623} is an apocalyptic number.

4051612581623 is a deficient number, since it is larger than the sum of its proper divisors (1).

4051612581623 is an equidigital number, since it uses as much as digits as its factorization.

4051612581623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 4051612581623 in words is "four trillion, fifty-one billion, six hundred twelve million, five hundred eighty-one thousand, six hundred twenty-three".