7661607550 has 24 divisors (see below), whose sum is σ = 14253592176. Its totient is φ = 3063997440.

The previous prime is 7661607529. The next prime is 7661607593. The reversal of 7661607550 is 557061667.

It is a junction number, because it is equal to n+sod(n) for n = 7661607497 and 7661607506.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 275902 + ... + 302398.

It is an arithmetic number, because the mean of its divisors is an integer number (593899674).

Almost surely, 2^7661607550 is an apocalyptic number.

7661607550 is a deficient number, since it is larger than the sum of its proper divisors (6591984626).

7661607550 is a wasteful number, since it uses less digits than its factorization.

7661607550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32292 (or 32287 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 7661607550 is about 87530.6092175760. The cubic root of 7661607550 is about 1971.3934115337.

The spelling of 7661607550 in words is "seven billion, six hundred sixty-one million, six hundred seven thousand, five hundred fifty".