77407044340481 has 16 divisors (see below), whose sum is σ = 79153012753920. Its totient is φ = 75665212342080.

The previous prime is 77407044340477. The next prime is 77407044340487. The reversal of 77407044340481 is 18404344070477.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 77407044340481 - 2² = 77407044340477 is a prime.

It is a super-3 number, since 3×77407044340481³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77407044340487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 783129395 + ... + 783228231.

It is an arithmetic number, because the mean of its divisors is an integer number (4947063297120).

Almost surely, 2^{77407044340481} is an apocalyptic number.

It is an amenable number.

77407044340481 is a deficient number, since it is larger than the sum of its proper divisors (1745968413439).

77407044340481 is a wasteful number, since it uses less digits than its factorization.

77407044340481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119584.

The product of its (nonzero) digits is 8429568, while the sum is 53.

The spelling of 77407044340481 in words is "seventy-seven trillion, four hundred seven billion, forty-four million, three hundred forty thousand, four hundred eighty-one".