2072123723605 has 32 divisors (see below), whose sum is σ = 2713635542016. Its totient is φ = 1509839944704.

The previous prime is 2072123723599. The next prime is 2072123723609. The reversal of 2072123723605 is 5063273212702.

It is not a de Polignac number, because 2072123723605 - 2⁵ = 2072123723573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2072123723609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1005394 + ... + 2270476.

It is an arithmetic number, because the mean of its divisors is an integer number (84801110688).

Almost surely, 2^{2072123723605} is an apocalyptic number.

It is an amenable number.

2072123723605 is a deficient number, since it is larger than the sum of its proper divisors (641511818411).

2072123723605 is a wasteful number, since it uses less digits than its factorization.

2072123723605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265437.

The product of its (nonzero) digits is 211680, while the sum is 40.

The spelling of 2072123723605 in words is "two trillion, seventy-two billion, one hundred twenty-three million, seven hundred twenty-three thousand, six hundred five".