64520083143 has 8 divisors (see below), whose sum is σ = 95585308400. Its totient is φ = 43013388744.

The previous prime is 64520083091. The next prime is 64520083183. The reversal of 64520083143 is 34138002546.

64520083143 is a `hidden beast` number, since 64 + 520 + 0 + 8 + 31 + 43 = 666.

It is not a de Polignac number, because 64520083143 - 2¹² = 64520079047 is a prime.

It is a super-2 number, since 2×64520083143² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64520083098 and 64520083107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64520083183) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1194816328 + ... + 1194816381.

It is an arithmetic number, because the mean of its divisors is an integer number (11948163550).

Almost surely, 2^64520083143 is an apocalyptic number.

64520083143 is a deficient number, since it is larger than the sum of its proper divisors (31065225257).

64520083143 is a wasteful number, since it uses less digits than its factorization.

64520083143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389632718 (or 2389632712 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 64520083143 its reverse (34138002546), we get a palindrome (98658085689).

The spelling of 64520083143 in words is "sixty-four billion, five hundred twenty million, eighty-three thousand, one hundred forty-three".