41074723561 has 9 divisors (see below), whose sum is σ = 41259778693. Its totient is φ = 40890497440.

The previous prime is 41074723541. The next prime is 41074723579. The reversal of 41074723561 is 16532747014.

The square root of 41074723561 is 202669.

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

It can be written as a sum of positive squares in 4 ways, for example, as 9383603161 + 31691120400 = 96869^2 + 178020^2 .

It is not a de Polignac number, because 41074723561 - 2¹⁵ = 41074690793 is a prime.

It is a super-2 number, since 2×41074723561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41074723541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 78837981 + ... + 78838501.

Almost surely, 2^41074723561 is an apocalyptic number.

41074723561 is the 202669-th square number.

41074723561 is the 101335-th centered octagonal number.

It is an amenable number.

41074723561 is a deficient number, since it is larger than the sum of its proper divisors (185055132).

41074723561 is an frugal number, since it uses more digits than its factorization.

41074723561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 41074723561 in words is "forty-one billion, seventy-four million, seven hundred twenty-three thousand, five hundred sixty-one".