77400560493 has 12 divisors (see below), whose sum is σ = 111804451200. Its totient is φ = 51598692936.

The previous prime is 77400560453. The next prime is 77400560507. The reversal of 77400560493 is 39406500477.

77400560493 is a `hidden beast` number, since 7 + 7 + 40 + 0 + 560 + 49 + 3 = 666.

It is not a de Polignac number, because 77400560493 - 2⁶ = 77400560429 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77400560453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193380 + ... + 438402.

It is an arithmetic number, because the mean of its divisors is an integer number (9317037600).

Almost surely, 2^77400560493 is an apocalyptic number.

It is an amenable number.

77400560493 is a deficient number, since it is larger than the sum of its proper divisors (34403890707).

77400560493 is a wasteful number, since it uses less digits than its factorization.

77400560493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280128 (or 280125 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 77400560493 in words is "seventy-seven billion, four hundred million, five hundred sixty thousand, four hundred ninety-three".