4756791661 has 4 divisors (see below), whose sum is σ = 4756931424. Its totient is φ = 4756651900.

The previous prime is 4756791649. The next prime is 4756791701. The reversal of 4756791661 is 1661976574.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4756791661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4756791599 and 4756791608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4756798661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18066 + ... + 99196.

It is an arithmetic number, because the mean of its divisors is an integer number (1189232856).

Almost surely, 2^4756791661 is an apocalyptic number.

It is an amenable number.

4756791661 is a deficient number, since it is larger than the sum of its proper divisors (139763).

4756791661 is an equidigital number, since it uses as much as digits as its factorization.

4756791661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139762.

The product of its digits is 1905120, while the sum is 52.

The square root of 4756791661 is about 68969.4980480502. The cubic root of 4756791661 is about 1681.7884936912.

The spelling of 4756791661 in words is "four billion, seven hundred fifty-six million, seven hundred ninety-one thousand, six hundred sixty-one".