77730078111511 has 16 divisors (see below), whose sum is σ = 91311473150784. Its totient is φ = 64790207000064.

The previous prime is 77730078111467. The next prime is 77730078111551. The reversal of 77730078111511 is 11511187003777.

It is not a de Polignac number, because 77730078111511 - 2⁷ = 77730078111383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77730078111551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 927015756 + ... + 927099601.

It is an arithmetic number, because the mean of its divisors is an integer number (5706967071924).

Almost surely, 2^{77730078111511} is an apocalyptic number.

77730078111511 is a deficient number, since it is larger than the sum of its proper divisors (13581395039273).

77730078111511 is a wasteful number, since it uses less digits than its factorization.

77730078111511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854115530.

The product of its (nonzero) digits is 288120, while the sum is 49.

The spelling of 77730078111511 in words is "seventy-seven trillion, seven hundred thirty billion, seventy-eight million, one hundred eleven thousand, five hundred eleven".