2501120066643 has 24 divisors (see below), whose sum is σ = 4047676706736. Its totient is φ = 1474861953600.

The previous prime is 2501120066623. The next prime is 2501120066657. The reversal of 2501120066643 is 3466600211052.

It is not a de Polignac number, because 2501120066643 - 2⁵ = 2501120066611 is a prime.

It is a super-2 number, since 2×2501120066643² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2501120066598 and 2501120066607.

It is not an unprimeable number, because it can be changed into a prime (2501120066603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 341399568 + ... + 341406893.

It is an arithmetic number, because the mean of its divisors is an integer number (168653196114).

Almost surely, 2^{2501120066643} is an apocalyptic number.

2501120066643 is a deficient number, since it is larger than the sum of its proper divisors (1546556640093).

2501120066643 is a wasteful number, since it uses less digits than its factorization.

2501120066643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682806515 (or 682806512 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 2501120066643 its reverse (3466600211052), we get a palindrome (5967720277695).

The spelling of 2501120066643 in words is "two trillion, five hundred one billion, one hundred twenty million, sixty-six thousand, six hundred forty-three".