72998853489 has 27 divisors (see below), whose sum is σ = 106517816353. Its totient is φ = 48174709632.

The previous prime is 72998853479. The next prime is 72998853491. The reversal of 72998853489 is 98435889927.

The square root of 72998853489 is 270183.

It is a perfect power (a square), and thus also a powerful number.

72998853489 is a `hidden beast` number, since 7 + 2 + 9 + 9 + 8 + 8 + 534 + 89 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 27961525089 + 45037328400 = 167217^2 + 212220^2 .

It is not a de Polignac number, because 72998853489 - 2⁹ = 72998852977 is a prime.

It is a super-2 number, since 2×72998853489² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72998853419) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 91591639 + ... + 91592435.

Almost surely, 2^72998853489 is an apocalyptic number.

72998853489 is the 270183-rd square number.

72998853489 is the 135092-nd centered octagonal number.

It is an amenable number.

72998853489 is a deficient number, since it is larger than the sum of its proper divisors (33518962864).

72998853489 is an frugal number, since it uses more digits than its factorization.

72998853489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826 (or 913 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 72.

The spelling of 72998853489 in words is "seventy-two billion, nine hundred ninety-eight million, eight hundred fifty-three thousand, four hundred eighty-nine".