640124211441 has 64 divisors (see below), whose sum is σ = 1037047947264. Its totient is φ = 345893068800.

The previous prime is 640124211437. The next prime is 640124211479. The reversal of 640124211441 is 144112421046.

It is not a de Polignac number, because 640124211441 - 2² = 640124211437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 640124211399 and 640124211408.

It is not an unprimeable number, because it can be changed into a prime (640124211491) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6909361 + ... + 7001393.

It is an arithmetic number, because the mean of its divisors is an integer number (16203874176).

Almost surely, 2^640124211441 is an apocalyptic number.

It is an amenable number.

640124211441 is a deficient number, since it is larger than the sum of its proper divisors (396923735823).

640124211441 is a wasteful number, since it uses less digits than its factorization.

640124211441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92614.

The product of its (nonzero) digits is 6144, while the sum is 30.

Adding to 640124211441 its reverse (144112421046), we get a palindrome (784236632487).

The spelling of 640124211441 in words is "six hundred forty billion, one hundred twenty-four million, two hundred eleven thousand, four hundred forty-one".