1978608720030 has 32 divisors (see below), whose sum is σ = 4754189116800. Its totient is φ = 527014748832.

The previous prime is 1978608719959. The next prime is 1978608720073. The reversal of 1978608720030 is 300278068791.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38364000 + ... + 38415539.

It is an arithmetic number, because the mean of its divisors is an integer number (148568409900).

Almost surely, 2^{1978608720030} is an apocalyptic number.

1978608720030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1978608720030 is an abundant number, since it is smaller than the sum of its proper divisors (2775580396770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1978608720030 is a wasteful number, since it uses less digits than its factorization.

1978608720030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76780408.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 1978608720030 in words is "one trillion, nine hundred seventy-eight billion, six hundred eight million, seven hundred twenty thousand, thirty".