181763480272 has 40 divisors (see below), whose sum is σ = 385676868672. Its totient is φ = 82298265600.

The previous prime is 181763480257. The next prime is 181763480279. The reversal of 181763480272 is 272084367181.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181763480279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1964004 + ... + 2054467.

Almost surely, 2^181763480272 is an apocalyptic number.

It is an amenable number.

181763480272 is an abundant number, since it is smaller than the sum of its proper divisors (203913388400).

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

181763480272 is a wasteful number, since it uses less digits than its factorization.

181763480272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4018747 (or 4018741 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 181763480272 in words is "one hundred eighty-one billion, seven hundred sixty-three million, four hundred eighty thousand, two hundred seventy-two".