77767076266123 has 4 divisors (see below), whose sum is σ = 77802090710608. Its totient is φ = 77732061821640.

The previous prime is 77767076266111. The next prime is 77767076266147. The reversal of 77767076266123 is 32166267076777.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77767076266123 - 2⁵ = 77767076266091 is a prime.

It is a super-2 number, since 2×77767076266123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77767076266223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17507218911 + ... + 17507223352.

It is an arithmetic number, because the mean of its divisors is an integer number (19450522677652).

Almost surely, 2^{77767076266123} is an apocalyptic number.

77767076266123 is a deficient number, since it is larger than the sum of its proper divisors (35014444485).

77767076266123 is a wasteful number, since it uses less digits than its factorization.

77767076266123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35014444484.

The product of its (nonzero) digits is 261382464, while the sum is 67.

The spelling of 77767076266123 in words is "seventy-seven trillion, seven hundred sixty-seven billion, seventy-six million, two hundred sixty-six thousand, one hundred twenty-three".