65610051055 has 4 divisors (see below), whose sum is σ = 78732061272. Its totient is φ = 52488040840.

The previous prime is 65610051049. The next prime is 65610051083. The reversal of 65610051055 is 55015001656.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 65610051055 - 2⁷ = 65610050927 is a prime.

It is a super-2 number, since 2×65610051055² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65610051055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6561005101 + ... + 6561005110.

It is an arithmetic number, because the mean of its divisors is an integer number (19683015318).

Almost surely, 2^65610051055 is an apocalyptic number.

65610051055 is a deficient number, since it is larger than the sum of its proper divisors (13122010217).

65610051055 is a wasteful number, since it uses less digits than its factorization.

65610051055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13122010216.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 65610051055 in words is "sixty-five billion, six hundred ten million, fifty-one thousand, fifty-five".