787878377516 has 6 divisors (see below), whose sum is σ = 1378787160660. Its totient is φ = 393939188756.

The previous prime is 787878377459. The next prime is 787878377557. The reversal of 787878377516 is 615773878787.

It is a super-2 number, since 2×787878377516² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98484797186 + ... + 98484797193.

It is an arithmetic number, because the mean of its divisors is an integer number (229797860110).

Almost surely, 2^787878377516 is an apocalyptic number.

It is an amenable number.

787878377516 is a deficient number, since it is larger than the sum of its proper divisors (590908783144).

787878377516 is a wasteful number, since it uses less digits than its factorization.

787878377516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196969594383 (or 196969594381 counting only the distinct ones).

The product of its digits is 774466560, while the sum is 74.

The spelling of 787878377516 in words is "seven hundred eighty-seven billion, eight hundred seventy-eight million, three hundred seventy-seven thousand, five hundred sixteen".