77740093441 has 4 divisors (see below), whose sum is σ = 82313040132. Its totient is φ = 73167146752.

The previous prime is 77740093391. The next prime is 77740093471. The reversal of 77740093441 is 14439004777.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32826192400 + 44913901041 = 181180^2 + 211929^2 .

It is a cyclic number.

It is not a de Polignac number, because 77740093441 - 2¹⁷ = 77739962369 is a prime.

It is a super-2 number, since 2×77740093441² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77740093391 and 77740093400.

It is not an unprimeable number, because it can be changed into a prime (77740093471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2286473320 + ... + 2286473353.

It is an arithmetic number, because the mean of its divisors is an integer number (20578260033).

Almost surely, 2^77740093441 is an apocalyptic number.

It is an amenable number.

77740093441 is a deficient number, since it is larger than the sum of its proper divisors (4572946691).

77740093441 is a wasteful number, since it uses less digits than its factorization.

77740093441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572946690.

The product of its (nonzero) digits is 592704, while the sum is 46.

The spelling of 77740093441 in words is "seventy-seven billion, seven hundred forty million, ninety-three thousand, four hundred forty-one".