11651656041 has 6 divisors (see below), whose sum is σ = 16830169850. Its totient is φ = 7767770688.

The previous prime is 11651656033. The next prime is 11651656091. The reversal of 11651656041 is 14065615611.

11651656041 is a `hidden beast` number, since 1 + 1 + 6 + 51 + 6 + 560 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10169714025 + 1481942016 = 100845^2 + 38496^2 .

It is not a de Polignac number, because 11651656041 - 2³ = 11651656033 is a prime.

It is a super-2 number, since 2×11651656041² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11651655987 and 11651656005.

It is not an unprimeable number, because it can be changed into a prime (11651656091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 647314216 + ... + 647314233.

Almost surely, 2^11651656041 is an apocalyptic number.

It is an amenable number.

11651656041 is a deficient number, since it is larger than the sum of its proper divisors (5178513809).

11651656041 is a wasteful number, since it uses less digits than its factorization.

11651656041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294628455 (or 1294628452 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 11651656041 in words is "eleven billion, six hundred fifty-one million, six hundred fifty-six thousand, forty-one".