1981980000036 has 96 divisors (see below), whose sum is σ = 5555099312000. Its totient is φ = 608972494464.

The previous prime is 1981980000029. The next prime is 1981980000037. The reversal of 1981980000036 is 6300000891891.

It is a junction number, because it is equal to n+sod(n) for n = 1981979999946 and 1981980000000.

It is not an unprimeable number, because it can be changed into a prime (1981980000037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12976471 + ... + 13128318.

Almost surely, 2^{1981980000036} is an apocalyptic number.

It is an amenable number.

1981980000036 is an abundant number, since it is smaller than the sum of its proper divisors (3573119311964).

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

1981980000036 is a wasteful number, since it uses less digits than its factorization.

1981980000036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26104858 (or 26104850 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 1981980000036 in words is "one trillion, nine hundred eighty-one billion, nine hundred eighty million, thirty-six", and thus it is an aban number.