65511002051 has 48 divisors (see below), whose sum is σ = 77723670528. Its totient is φ = 54646099200.

The previous prime is 65511002041. The next prime is 65511002057. The reversal of 65511002051 is 15020011556.

It is not a de Polignac number, because 65511002051 - 2¹⁸ = 65510739907 is a prime.

It is a super-2 number, since 2×65511002051² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65511002051.

It is not an unprimeable number, because it can be changed into a prime (65511002057) 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 47 ways as a sum of consecutive naturals, for example, 25282766 + ... + 25285356.

It is an arithmetic number, because the mean of its divisors is an integer number (1619243136).

Almost surely, 2^65511002051 is an apocalyptic number.

65511002051 is a deficient number, since it is larger than the sum of its proper divisors (12212668477).

65511002051 is a wasteful number, since it uses less digits than its factorization.

65511002051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772 (or 2735 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 26.

The spelling of 65511002051 in words is "sixty-five billion, five hundred eleven million, two thousand, fifty-one".