40724900077 has 2 divisors, whose sum is σ = 40724900078. Its totient is φ = 40724900076.

The previous prime is 40724900017. The next prime is 40724900173. The reversal of 40724900077 is 77000942704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25301992356 + 15422907721 = 159066^2 + 124189^2 .

It is a cyclic number.

It is not a de Polignac number, because 40724900077 - 2⁷ = 40724899949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40724900017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20362450038 + 20362450039.

It is an arithmetic number, because the mean of its divisors is an integer number (20362450039).

Almost surely, 2^40724900077 is an apocalyptic number.

It is an amenable number.

40724900077 is a deficient number, since it is larger than the sum of its proper divisors (1).

40724900077 is an equidigital number, since it uses as much as digits as its factorization.

40724900077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 40.

The spelling of 40724900077 in words is "forty billion, seven hundred twenty-four million, nine hundred thousand, seventy-seven".