2501120066644 has 12 divisors (see below), whose sum is σ = 4377294098100. Its totient is φ = 1250464610048.

The previous prime is 2501120066623. The next prime is 2501120066657. The reversal of 2501120066644 is 4466600211052.

It can be written as a sum of positive squares in 2 ways, for example, as 866332792900 + 1634787273744 = 930770^2 + 1278588^2 .

It is a congruent number.

It is an unprimeable number.

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, 23796829 + ... + 23901700.

It is an arithmetic number, because the mean of its divisors is an integer number (364774508175).

Almost surely, 2^{2501120066644} is an apocalyptic number.

It is an amenable number.

2501120066644 is a deficient number, since it is larger than the sum of its proper divisors (1876174031456).

2501120066644 is a wasteful number, since it uses less digits than its factorization.

2501120066644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47711642 (or 47711640 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 2501120066644 its reverse (4466600211052), we get a palindrome (6967720277696).

The spelling of 2501120066644 in words is "two trillion, five hundred one billion, one hundred twenty million, sixty-six thousand, six hundred forty-four".