7540946661 has 8 divisors (see below), whose sum is σ = 10063245600. Its totient is φ = 5022972752.

The previous prime is 7540946641. The next prime is 7540946669. The reversal of 7540946661 is 1666490457.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7540946661 - 2¹⁰ = 7540945637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7540946661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7540946669) 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 7 ways as a sum of consecutive naturals, for example, 1077186 + ... + 1084163.

It is an arithmetic number, because the mean of its divisors is an integer number (1257905700).

Almost surely, 2^7540946661 is an apocalyptic number.

It is an amenable number.

7540946661 is a deficient number, since it is larger than the sum of its proper divisors (2522298939).

7540946661 is a wasteful number, since it uses less digits than its factorization.

7540946661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162515.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 7540946661 is about 86838.6242463571. The cubic root of 7540946661 is about 1960.9895964997.

The spelling of 7540946661 in words is "seven billion, five hundred forty million, nine hundred forty-six thousand, six hundred sixty-one".