77167749091 has 2 divisors, whose sum is σ = 77167749092. Its totient is φ = 77167749090.

The previous prime is 77167749059. The next prime is 77167749173. The reversal of 77167749091 is 19094776177.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77167749091 - 2⁵ = 77167749059 is a prime.

It is a super-2 number, since 2×77167749091² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77167749031) 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 as a sum of consecutive naturals, namely, 38583874545 + 38583874546.

It is an arithmetic number, because the mean of its divisors is an integer number (38583874546).

Almost surely, 2^77167749091 is an apocalyptic number.

77167749091 is a deficient number, since it is larger than the sum of its proper divisors (1).

77167749091 is an equidigital number, since it uses as much as digits as its factorization.

77167749091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4667544, while the sum is 58.

The spelling of 77167749091 in words is "seventy-seven billion, one hundred sixty-seven million, seven hundred forty-nine thousand, ninety-one".