787147778852 has 12 divisors (see below), whose sum is σ = 1403499341916. Its totient is φ = 386147966880.

The previous prime is 787147778839. The next prime is 787147778869. The reversal of 787147778852 is 258877741787.

It can be written as a sum of positive squares in 2 ways, for example, as 351727280356 + 435420498496 = 593066^2 + 659864^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1856480399 + ... + 1856480822.

It is an arithmetic number, because the mean of its divisors is an integer number (116958278493).

Almost surely, 2^787147778852 is an apocalyptic number.

It is an amenable number.

787147778852 is a deficient number, since it is larger than the sum of its proper divisors (616351563064).

787147778852 is a wasteful number, since it uses less digits than its factorization.

787147778852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712961278 (or 3712961276 counting only the distinct ones).

The product of its digits is 344207360, while the sum is 71.

The spelling of 787147778852 in words is "seven hundred eighty-seven billion, one hundred forty-seven million, seven hundred seventy-eight thousand, eight hundred fifty-two".