1983451999536 has 160 divisors (see below), whose sum is σ = 6507236843520. Its totient is φ = 566641806336.

The previous prime is 1983451999513. The next prime is 1983451999579. The reversal of 1983451999536 is 6359991543891.

1983451999536 is a `hidden beast` number, since 1 + 9 + 8 + 34 + 51 + 9 + 9 + 9 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35150001 + ... + 35206383.

It is an arithmetic number, because the mean of its divisors is an integer number (40670230272).

Almost surely, 2^{1983451999536} is an apocalyptic number.

1983451999536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1983451999536 is an abundant number, since it is smaller than the sum of its proper divisors (4523784843984).

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

1983451999536 is a wasteful number, since it uses less digits than its factorization.

1983451999536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68040 (or 68028 counting only the distinct ones).

The product of its digits is 283435200, while the sum is 72.

The spelling of 1983451999536 in words is "one trillion, nine hundred eighty-three billion, four hundred fifty-one million, nine hundred ninety-nine thousand, five hundred thirty-six".