4072045520761 has 3 divisors (see below), whose sum is σ = 4072047538693. Its totient is φ = 4072043502830.

The previous prime is 4072045520747. The next prime is 4072045520831. The reversal of 4072045520761 is 1670255402704.

The square root of 4072045520761 is 2017931.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 4072045520761 - 2¹⁷ = 4072045389689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4072045580761) 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 in 2 ways as a sum of consecutive naturals, for example, 1008966 + ... + 3026896.

Almost surely, 2^{4072045520761} is an apocalyptic number.

4072045520761 is the 2017931-st square number.

4072045520761 is the 1008966-th centered octagonal number.

It is an amenable number.

4072045520761 is a deficient number, since it is larger than the sum of its proper divisors (2017932).

4072045520761 is an frugal number, since it uses more digits than its factorization.

4072045520761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4035862 (or 2017931 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 43.

The spelling of 4072045520761 in words is "four trillion, seventy-two billion, forty-five million, five hundred twenty thousand, seven hundred sixty-one".