729937539936 has 576 divisors, whose sum is σ = 2385515059200. Its totient is φ = 209710080000.

The previous prime is 729937539887. The next prime is 729937540037. The reversal of 729937539936 is 639935739927.

729937539936 is a `hidden beast` number, since 7 + 29 + 9 + 37 + 539 + 9 + 36 = 666.

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 polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1214538036 + ... + 1214538636.

It is an arithmetic number, because the mean of its divisors is an integer number (4141519200).

Almost surely, 2^729937539936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 729937539936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1192757529600).

729937539936 is an abundant number, since it is smaller than the sum of its proper divisors (1655577519264).

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

729937539936 is a wasteful number, since it uses less digits than its factorization.

729937539936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891 (or 880 counting only the distinct ones).

The product of its digits is 520812180, while the sum is 72.

Subtracting from 729937539936 its reverse (639935739927), we obtain a square (90001800009 = 300003²).

The spelling of 729937539936 in words is "seven hundred twenty-nine billion, nine hundred thirty-seven million, five hundred thirty-nine thousand, nine hundred thirty-six".