7661145783 has 8 divisors (see below), whose sum is σ = 10452416128. Its totient is φ = 4988652984.

The previous prime is 7661145757. The next prime is 7661145809. The reversal of 7661145783 is 3875411667.

It is an interprime number because it is at equal distance from previous prime (7661145757) and next prime (7661145809).

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

It is not a de Polignac number, because 7661145783 - 2⁶ = 7661145719 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 (7661145983) 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, 29694235 + ... + 29694492.

It is an arithmetic number, because the mean of its divisors is an integer number (1306552016).

Almost surely, 2^7661145783 is an apocalyptic number.

7661145783 is a deficient number, since it is larger than the sum of its proper divisors (2791270345).

7661145783 is a wasteful number, since it uses less digits than its factorization.

7661145783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59388773.

The product of its digits is 846720, while the sum is 48.

The square root of 7661145783 is about 87527.9714319942. The cubic root of 7661145783 is about 1971.3538052803.

The spelling of 7661145783 in words is "seven billion, six hundred sixty-one million, one hundred forty-five thousand, seven hundred eighty-three".