65161065115550 has 96 divisors (see below), whose sum is σ = 124591292727264. Its totient is φ = 25347202560000.

The previous prime is 65161065115529. The next prime is 65161065115589. The reversal of 65161065115550 is 5551156016156.

It is a junction number, because it is equal to n+sod(n) for n = 65161065115495 and 65161065115504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88477937 + ... + 89211363.

It is an arithmetic number, because the mean of its divisors is an integer number (1297825965909).

Almost surely, 2^{65161065115550} is an apocalyptic number.

65161065115550 is a deficient number, since it is larger than the sum of its proper divisors (59430227611714).

65161065115550 is a wasteful number, since it uses less digits than its factorization.

65161065115550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733854 (or 733849 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 47.

The spelling of 65161065115550 in words is "sixty-five trillion, one hundred sixty-one billion, sixty-five million, one hundred fifteen thousand, five hundred fifty".