640206543119 has 16 divisors (see below), whose sum is σ = 752156453664. Its totient is φ = 537217910400.

The previous prime is 640206543103. The next prime is 640206543121. The reversal of 640206543119 is 911345602046.

It is a cyclic number.

It is not a de Polignac number, because 640206543119 - 2⁴ = 640206543103 is a prime.

It is a super-2 number, since 2×640206543119² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640206543149) 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, 5586197 + ... + 5699649.

It is an arithmetic number, because the mean of its divisors is an integer number (47009778354).

Almost surely, 2^640206543119 is an apocalyptic number.

640206543119 is a deficient number, since it is larger than the sum of its proper divisors (111949910545).

640206543119 is a wasteful number, since it uses less digits than its factorization.

640206543119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152938.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 640206543119 in words is "six hundred forty billion, two hundred six million, five hundred forty-three thousand, one hundred nineteen".