2605721112722 has 64 divisors (see below), whose sum is σ = 4839662822400. Its totient is φ = 1024614904320.

The previous prime is 2605721112671. The next prime is 2605721112763. The reversal of 2605721112722 is 2272111275062.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23477054 + ... + 23587782.

It is an arithmetic number, because the mean of its divisors is an integer number (75619731600).

Almost surely, 2^{2605721112722} is an apocalyptic number.

2605721112722 is a deficient number, since it is larger than the sum of its proper divisors (2233941709678).

2605721112722 is a wasteful number, since it uses less digits than its factorization.

2605721112722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111531.

The product of its (nonzero) digits is 47040, while the sum is 38.

Adding to 2605721112722 its reverse (2272111275062), we get a palindrome (4877832387784).

The spelling of 2605721112722 in words is "two trillion, six hundred five billion, seven hundred twenty-one million, one hundred twelve thousand, seven hundred twenty-two".