77111123 has 2 divisors, whose sum is σ = 77111124. Its totient is φ = 77111122.

The previous prime is 77111039. The next prime is 77111149. The reversal of 77111123 is 32111177.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77111123 - 2¹⁴ = 77094739 is a prime.

It is a super-2 number, since 2×77111123² = 11892250580642258, which contains 22 as substring.

It is equal to p_4510652 and since 77111123 and 4510652 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (77111173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38555561 + 38555562.

It is an arithmetic number, because the mean of its divisors is an integer number (38555562).

Almost surely, 2^77111123 is an apocalyptic number.

77111123 is a deficient number, since it is larger than the sum of its proper divisors (1).

77111123 is an equidigital number, since it uses as much as digits as its factorization.

77111123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294, while the sum is 23.

The square root of 77111123 is about 8781.2939251570. The cubic root of 77111123 is about 425.6366430747.

The spelling of 77111123 in words is "seventy-seven million, one hundred eleven thousand, one hundred twenty-three".