24155240661 has 8 divisors (see below), whose sum is σ = 35785541760. Its totient is φ = 16103493756.

The previous prime is 24155240639. The next prime is 24155240693. The reversal of 24155240661 is 16604255142.

24155240661 is a `hidden beast` number, since 2 + 4 + 1 + 552 + 40 + 6 + 61 = 666.

It is not a de Polignac number, because 24155240661 - 2²³ = 24146852053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24155240761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447319245 + ... + 447319298.

It is an arithmetic number, because the mean of its divisors is an integer number (4473192720).

Almost surely, 2^24155240661 is an apocalyptic number.

It is an amenable number.

24155240661 is a deficient number, since it is larger than the sum of its proper divisors (11630301099).

24155240661 is an equidigital number, since it uses as much as digits as its factorization.

24155240661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894638552 (or 894638546 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 24155240661 in words is "twenty-four billion, one hundred fifty-five million, two hundred forty thousand, six hundred sixty-one".