787898789878 has 8 divisors (see below), whose sum is σ = 1244050720920. Its totient is φ = 373215216240.

The previous prime is 787898789861. The next prime is 787898789879. The reversal of 787898789878 is 878987898787.

787898789878 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787898789879) 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, 10367089303 + ... + 10367089378.

It is an arithmetic number, because the mean of its divisors is an integer number (155506340115).

Almost surely, 2^787898789878 is an apocalyptic number.

787898789878 is a deficient number, since it is larger than the sum of its proper divisors (456151931042).

787898789878 is a wasteful number, since it uses less digits than its factorization.

787898789878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20734178702.

The product of its digits is 50982027264, while the sum is 94.

The spelling of 787898789878 in words is "seven hundred eighty-seven billion, eight hundred ninety-eight million, seven hundred eighty-nine thousand, eight hundred seventy-eight".