71730489412 has 96 divisors (see below), whose sum is σ = 135556936704. Its totient is φ = 33156864000.

The previous prime is 71730489361. The next prime is 71730489419. The reversal of 71730489412 is 21498403717.

It is a super-2 number, since 2×71730489412² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71730489419) 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, 36765037 + ... + 36766987.

It is an arithmetic number, because the mean of its divisors is an integer number (1412051424).

Almost surely, 2^71730489412 is an apocalyptic number.

It is an amenable number.

71730489412 is a deficient number, since it is larger than the sum of its proper divisors (63826447292).

71730489412 is a wasteful number, since it uses less digits than its factorization.

71730489412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189 (or 2187 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 71730489412 in words is "seventy-one billion, seven hundred thirty million, four hundred eighty-nine thousand, four hundred twelve".