40764180437 has 2 divisors, whose sum is σ = 40764180438. Its totient is φ = 40764180436.

The previous prime is 40764180407. The next prime is 40764180487. The reversal of 40764180437 is 73408146704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24358157041 + 16406023396 = 156071^2 + 128086^2 .

It is a cyclic number.

It is not a de Polignac number, because 40764180437 - 2⁸ = 40764180181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40764180407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20382090218 + 20382090219.

It is an arithmetic number, because the mean of its divisors is an integer number (20382090219).

Almost surely, 2^40764180437 is an apocalyptic number.

It is an amenable number.

40764180437 is a deficient number, since it is larger than the sum of its proper divisors (1).

40764180437 is an equidigital number, since it uses as much as digits as its factorization.

40764180437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 40764180437 in words is "forty billion, seven hundred sixty-four million, one hundred eighty thousand, four hundred thirty-seven".