81984758150 has 24 divisors (see below), whose sum is σ = 152506481520. Its totient is φ = 32790713760.

The previous prime is 81984758099. The next prime is 81984758159. The reversal of 81984758150 is 5185748918.

It is a super-4 number, since 4×81984758150⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81984758159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 478136 + ... + 626564.

It is an arithmetic number, because the mean of its divisors is an integer number (6354436730).

Almost surely, 2^81984758150 is an apocalyptic number.

81984758150 is a deficient number, since it is larger than the sum of its proper divisors (70521723370).

81984758150 is a wasteful number, since it uses less digits than its factorization.

81984758150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159488 (or 159483 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 56.

The spelling of 81984758150 in words is "eighty-one billion, nine hundred eighty-four million, seven hundred fifty-eight thousand, one hundred fifty".