77740093471 has 2 divisors, whose sum is σ = 77740093472. Its totient is φ = 77740093470.

The previous prime is 77740093391. The next prime is 77740093517. The reversal of 77740093471 is 17439004777.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77740093471 - 2⁹ = 77740092959 is a prime.

It is a super-3 number, since 3×77740093471³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77740043471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38870046735 + 38870046736.

It is an arithmetic number, because the mean of its divisors is an integer number (38870046736).

Almost surely, 2^77740093471 is an apocalyptic number.

77740093471 is a deficient number, since it is larger than the sum of its proper divisors (1).

77740093471 is an equidigital number, since it uses as much as digits as its factorization.

77740093471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1037232, while the sum is 49.

The spelling of 77740093471 in words is "seventy-seven billion, seven hundred forty million, ninety-three thousand, four hundred seventy-one".