77433270077 has 2 divisors, whose sum is σ = 77433270078. Its totient is φ = 77433270076.

The previous prime is 77433270049. The next prime is 77433270121. The reversal of 77433270077 is 77007233477.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67605720121 + 9827549956 = 260011^2 + 99134^2 .

It is a cyclic number.

It is not a de Polignac number, because 77433270077 - 2⁸ = 77433269821 is a prime.

It is a super-2 number, since 2×77433270077² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77433270877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38716635038 + 38716635039.

It is an arithmetic number, because the mean of its divisors is an integer number (38716635039).

Almost surely, 2^77433270077 is an apocalyptic number.

It is an amenable number.

77433270077 is a deficient number, since it is larger than the sum of its proper divisors (1).

77433270077 is an equidigital number, since it uses as much as digits as its factorization.

77433270077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1210104, while the sum is 47.

The spelling of 77433270077 in words is "seventy-seven billion, four hundred thirty-three million, two hundred seventy thousand, seventy-seven".