40642309259 has 2 divisors, whose sum is σ = 40642309260. Its totient is φ = 40642309258.

The previous prime is 40642309249. The next prime is 40642309273. The reversal of 40642309259 is 95290324604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40642309259 - 2¹² = 40642305163 is a prime.

It is a super-3 number, since 3×40642309259³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (40642309249) 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 as a sum of consecutive naturals, namely, 20321154629 + 20321154630.

It is an arithmetic number, because the mean of its divisors is an integer number (20321154630).

Almost surely, 2^40642309259 is an apocalyptic number.

40642309259 is a deficient number, since it is larger than the sum of its proper divisors (1).

40642309259 is an equidigital number, since it uses as much as digits as its factorization.

40642309259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 40642309259 in words is "forty billion, six hundred forty-two million, three hundred nine thousand, two hundred fifty-nine".