78903621982 has 16 divisors (see below), whose sum is σ = 119987066160. Its totient is φ = 38908026432.

The previous prime is 78903621947. The next prime is 78903621983. The reversal of 78903621982 is 28912630987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78903621983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3290428 + ... + 3314320.

It is an arithmetic number, because the mean of its divisors is an integer number (7499191635).

Almost surely, 2^78903621982 is an apocalyptic number.

78903621982 is a deficient number, since it is larger than the sum of its proper divisors (41083444178).

78903621982 is a wasteful number, since it uses less digits than its factorization.

78903621982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46587.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 78903621982 in words is "seventy-eight billion, nine hundred three million, six hundred twenty-one thousand, nine hundred eighty-two".