40777302077 has 2 divisors, whose sum is σ = 40777302078. Its totient is φ = 40777302076.

The previous prime is 40777302061. The next prime is 40777302089. The reversal of 40777302077 is 77020377704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35641286521 + 5136015556 = 188789^2 + 71666^2 .

It is a cyclic number.

It is not a de Polignac number, because 40777302077 - 2⁴ = 40777302061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40777302017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20388651038 + 20388651039.

It is an arithmetic number, because the mean of its divisors is an integer number (20388651039).

Almost surely, 2^40777302077 is an apocalyptic number.

It is an amenable number.

40777302077 is a deficient number, since it is larger than the sum of its proper divisors (1).

40777302077 is an equidigital number, since it uses as much as digits as its factorization.

40777302077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403368, while the sum is 44.

The spelling of 40777302077 in words is "forty billion, seven hundred seventy-seven million, three hundred two thousand, seventy-seven".