65628370511 has 16 divisors (see below), whose sum is σ = 78420039840. Its totient is φ = 54216314880.

The previous prime is 65628370501. The next prime is 65628370553. The reversal of 65628370511 is 11507382656.

It is a cyclic number.

It is not a de Polignac number, because 65628370511 - 2⁶ = 65628370447 is a prime.

It is a super-2 number, since 2×65628370511² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65628370501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6045506 + ... + 6056351.

It is an arithmetic number, because the mean of its divisors is an integer number (4901252490).

Almost surely, 2^65628370511 is an apocalyptic number.

65628370511 is a deficient number, since it is larger than the sum of its proper divisors (12791669329).

65628370511 is a wasteful number, since it uses less digits than its factorization.

65628370511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12101914.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 65628370511 in words is "sixty-five billion, six hundred twenty-eight million, three hundred seventy thousand, five hundred eleven".