40020167223649 has 2 divisors, whose sum is σ = 40020167223650. Its totient is φ = 40020167223648.

The previous prime is 40020167223521. The next prime is 40020167223721. The reversal of 40020167223649 is 94632276102004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33145582128400 + 6874585095249 = 5757220^2 + 2621943^2 .

It is a cyclic number.

It is not a de Polignac number, because 40020167223649 - 2⁷ = 40020167223521 is a prime.

It is a super-2 number, since 2×40020167223649² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40020167223599 and 40020167223608.

It is not a weakly prime, because it can be changed into another prime (40020161223649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20010083611824 + 20010083611825.

It is an arithmetic number, because the mean of its divisors is an integer number (20010083611825).

Almost surely, 2^{40020167223649} is an apocalyptic number.

It is an amenable number.

40020167223649 is a deficient number, since it is larger than the sum of its proper divisors (1).

40020167223649 is an equidigital number, since it uses as much as digits as its factorization.

40020167223649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 40020167223649 in words is "forty trillion, twenty billion, one hundred sixty-seven million, two hundred twenty-three thousand, six hundred forty-nine".