81804741483 has 18 divisors (see below), whose sum is σ = 112125704124. Its totient is φ = 53050645584.

The previous prime is 81804741479. The next prime is 81804741569. The reversal of 81804741483 is 38414740818.

It is not a de Polignac number, because 81804741483 - 2² = 81804741479 is a prime.

It is a super-2 number, since 2×81804741483² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (81804741413) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18327310 + ... + 18331772.

Almost surely, 2^81804741483 is an apocalyptic number.

81804741483 is a deficient number, since it is larger than the sum of its proper divisors (30320962641).

81804741483 is an frugal number, since it uses more digits than its factorization.

81804741483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9003 (or 4503 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 48.

Multiplying 81804741483 by its sum of digits (48), we get a square (3926627591184 = 1981572²).

The spelling of 81804741483 in words is "eighty-one billion, eight hundred four million, seven hundred forty-one thousand, four hundred eighty-three".