4001261240077 has 2 divisors, whose sum is σ = 4001261240078. Its totient is φ = 4001261240076.

The previous prime is 4001261240027. The next prime is 4001261240129. The reversal of 4001261240077 is 7700421621004.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2743333002601 + 1257928237476 = 1656301^2 + 1121574^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4001261240077 is a prime.

It is a super-2 number, since 2×4001261240077² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4001261240027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000630620038 + 2000630620039.

It is an arithmetic number, because the mean of its divisors is an integer number (2000630620039).

Almost surely, 2^{4001261240077} is an apocalyptic number.

It is an amenable number.

4001261240077 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001261240077 is an equidigital number, since it uses as much as digits as its factorization.

4001261240077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 34.

The spelling of 4001261240077 in words is "four trillion, one billion, two hundred sixty-one million, two hundred forty thousand, seventy-seven".