78983941550 has 48 divisors (see below), whose sum is σ = 150449418240. Its totient is φ = 30833641440.

The previous prime is 78983941541. The next prime is 78983941579. The reversal of 78983941550 is 5514938987.

It is a self number, because there is not a number n which added to its sum of digits gives 78983941550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2735489 + ... + 2764211.

It is an arithmetic number, because the mean of its divisors is an integer number (3134362880).

Almost surely, 2^78983941550 is an apocalyptic number.

78983941550 is a deficient number, since it is larger than the sum of its proper divisors (71465476690).

78983941550 is a wasteful number, since it uses less digits than its factorization.

78983941550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30057 (or 30052 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 59.

The spelling of 78983941550 in words is "seventy-eight billion, nine hundred eighty-three million, nine hundred forty-one thousand, five hundred fifty".