787142781873 has 48 divisors (see below), whose sum is σ = 1368725729280. Its totient is φ = 425834109792.

The previous prime is 787142781869. The next prime is 787142782003. The reversal of 787142781873 is 378187241787.

787142781873 is a `hidden beast` number, since 78 + 71 + 427 + 8 + 1 + 8 + 73 = 666.

It is not a de Polignac number, because 787142781873 - 2² = 787142781869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 787142781873.

It is not an unprimeable number, because it can be changed into a prime (787142781773) 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 in 47 ways as a sum of consecutive naturals, for example, 1553440 + ... + 1996862.

It is an arithmetic number, because the mean of its divisors is an integer number (28515119360).

Almost surely, 2^787142781873 is an apocalyptic number.

It is an amenable number.

787142781873 is a deficient number, since it is larger than the sum of its proper divisors (581582947407).

787142781873 is a wasteful number, since it uses less digits than its factorization.

787142781873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444938 (or 444935 counting only the distinct ones).

The product of its digits is 29503488, while the sum is 63.

The spelling of 787142781873 in words is "seven hundred eighty-seven billion, one hundred forty-two million, seven hundred eighty-one thousand, eight hundred seventy-three".