729897489504 has 96 divisors (see below), whose sum is σ = 2129323200480. Its totient is φ = 243247104000.

The previous prime is 729897489499. The next prime is 729897489533. The reversal of 729897489504 is 405984798927.

729897489504 is a `hidden beast` number, since 7 + 2 + 9 + 8 + 97 + 489 + 50 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4060084 + ... + 4236044.

It is an arithmetic number, because the mean of its divisors is an integer number (22180450005).

Almost surely, 2^729897489504 is an apocalyptic number.

It is an amenable number.

729897489504 is an abundant number, since it is smaller than the sum of its proper divisors (1399425710976).

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

729897489504 is a wasteful number, since it uses less digits than its factorization.

729897489504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180781 (or 180767 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 72.

The spelling of 729897489504 in words is "seven hundred twenty-nine billion, eight hundred ninety-seven million, four hundred eighty-nine thousand, five hundred four".