24940090661 has 4 divisors (see below), whose sum is σ = 25039453824. Its totient is φ = 24840727500.

The previous prime is 24940090649. The next prime is 24940090663. The reversal of 24940090661 is 16609004942.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16609004942 = 2 ⋅8304502471.

It is a cyclic number.

It is not a de Polignac number, because 24940090661 - 2¹⁴ = 24940074277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24940090663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49681205 + ... + 49681706.

It is an arithmetic number, because the mean of its divisors is an integer number (6259863456).

Almost surely, 2^24940090661 is an apocalyptic number.

It is an amenable number.

24940090661 is a deficient number, since it is larger than the sum of its proper divisors (99363163).

24940090661 is an equidigital number, since it uses as much as digits as its factorization.

24940090661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99363162.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 24940090661 in words is "twenty-four billion, nine hundred forty million, ninety thousand, six hundred sixty-one".