640475167301 has 2 divisors, whose sum is σ = 640475167302. Its totient is φ = 640475167300.

The previous prime is 640475167291. The next prime is 640475167337. The reversal of 640475167301 is 103761574046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 635759049025 + 4716118276 = 797345^2 + 68674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-640475167301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (640475107301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320237583650 + 320237583651.

It is an arithmetic number, because the mean of its divisors is an integer number (320237583651).

Almost surely, 2^640475167301 is an apocalyptic number.

It is an amenable number.

640475167301 is a deficient number, since it is larger than the sum of its proper divisors (1).

640475167301 is an equidigital number, since it uses as much as digits as its factorization.

640475167301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 640475167301 in words is "six hundred forty billion, four hundred seventy-five million, one hundred sixty-seven thousand, three hundred one".