30239693877969 has 21 divisors (see below), whose sum is σ = 45339022897483. Its totient is φ = 20159696935512.

The previous prime is 30239693877937. The next prime is 30239693877971. The reversal of 30239693877969 is 96977839693203.

The square root of 30239693877969 is 5499063.

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

30239693877969 is a `hidden beast` number, since 3 + 0 + 2 + 396 + 93 + 87 + 7 + 9 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20120042178369 + 10119651699600 = 4485537^2 + 3181140^2 .

It is not a de Polignac number, because 30239693877969 - 2⁵ = 30239693877937 is a prime.

It is a super-2 number, since 2×30239693877969² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30239693877269) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 148372867 + ... + 148576535.

Almost surely, 2^{30239693877969} is an apocalyptic number.

30239693877969 is the 5499063-rd square number.

30239693877969 is the 2749532-nd centered octagonal number.

It is an amenable number.

30239693877969 is a deficient number, since it is larger than the sum of its proper divisors (15099329019514).

30239693877969 is an frugal number, since it uses more digits than its factorization.

30239693877969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407356 (or 203672 counting only the distinct ones).

The product of its (nonzero) digits is 4999796928, while the sum is 81.

30239693877969 divided by its sum of digits (81) gives a square (373329554049 = 611007²).

The spelling of 30239693877969 in words is "thirty trillion, two hundred thirty-nine billion, six hundred ninety-three million, eight hundred seventy-seven thousand, nine hundred sixty-nine".