4001012651 has 2 divisors, whose sum is σ = 4001012652. Its totient is φ = 4001012650.

The previous prime is 4001012629. The next prime is 4001012677. The reversal of 4001012651 is 1562101004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4001012651 - 2¹⁰ = 4001011627 is a prime.

It is not a weakly prime, because it can be changed into another prime (4001017651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000506325 + 2000506326.

It is an arithmetic number, because the mean of its divisors is an integer number (2000506326).

Almost surely, 2^4001012651 is an apocalyptic number.

4001012651 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001012651 is an equidigital number, since it uses as much as digits as its factorization.

4001012651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 4001012651 is about 63253.5584058320. The cubic root of 4001012651 is about 1587.5349976040.

Adding to 4001012651 its reverse (1562101004), we get a palindrome (5563113655).

The spelling of 4001012651 in words is "four billion, one million, twelve thousand, six hundred fifty-one".