73400040006989 has 2 divisors, whose sum is σ = 73400040006990. Its totient is φ = 73400040006988.

The previous prime is 73400040006971. The next prime is 73400040007067. The reversal of 73400040006989 is 98960004000437.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41965235451364 + 31434804555625 = 6478058^2 + 5606675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73400040006989 is a prime.

It is a super-2 number, since 2×73400040006989² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73400040006919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36700020003494 + 36700020003495.

It is an arithmetic number, because the mean of its divisors is an integer number (36700020003495).

Almost surely, 2^{73400040006989} is an apocalyptic number.

It is an amenable number.

73400040006989 is a deficient number, since it is larger than the sum of its proper divisors (1).

73400040006989 is an equidigital number, since it uses as much as digits as its factorization.

73400040006989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 73400040006989 in words is "seventy-three trillion, four hundred billion, forty million, six thousand, nine hundred eighty-nine".