3821480778912 has 24 divisors (see below), whose sum is σ = 10031387044896. Its totient is φ = 1273826926272.

The previous prime is 3821480778911. The next prime is 3821480778937. The reversal of 3821480778912 is 2198770841283.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (3821480778911) 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, 19903545628 + ... + 19903545819.

It is an arithmetic number, because the mean of its divisors is an integer number (417974460204).

Almost surely, 2^{3821480778912} is an apocalyptic number.

3821480778912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3821480778912 is an abundant number, since it is smaller than the sum of its proper divisors (6209906265984).

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

3821480778912 is a wasteful number, since it uses less digits than its factorization.

3821480778912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39807091460 (or 39807091452 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 3821480778912 in words is "three trillion, eight hundred twenty-one billion, four hundred eighty million, seven hundred seventy-eight thousand, nine hundred twelve".