41115552521661 has 32 divisors (see below), whose sum is σ = 61076076195840. Its totient is φ = 27336514392000.

The previous prime is 41115552521647. The next prime is 41115552521723. The reversal of 41115552521661 is 16612525551114.

41115552521661 is a `hidden beast` number, since 4 + 1 + 1 + 1 + 55 + 525 + 2 + 16 + 61 = 666.

It is not a de Polignac number, because 41115552521661 - 2²⁷ = 41115418303933 is a prime.

It is a super-2 number, since 2×41115552521661² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41115552520661) 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, 128285511 + ... + 128605611.

It is an arithmetic number, because the mean of its divisors is an integer number (1908627381120).

Almost surely, 2^{41115552521661} is an apocalyptic number.

It is an amenable number.

41115552521661 is a deficient number, since it is larger than the sum of its proper divisors (19960523674179).

41115552521661 is a wasteful number, since it uses less digits than its factorization.

41115552521661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332914 (or 332908 counting only the distinct ones).

The product of its digits is 360000, while the sum is 45.

The spelling of 41115552521661 in words is "forty-one trillion, one hundred fifteen billion, five hundred fifty-two million, five hundred twenty-one thousand, six hundred sixty-one".