15833897347489 has 9 divisors (see below), whose sum is σ = 17145637166259. Its totient is φ = 14615857493640.

The previous prime is 15833897347459. The next prime is 15833897347493. The reversal of 15833897347489 is 98474379833851.

The square root of 15833897347489 is 3979183.

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

It can be written as a sum of positive squares in only one way, i.e., 2342292507025 + 13491604840464 = 1530455^2 + 3673092^2 .

It is not a de Polignac number, because 15833897347489 - 2⁷ = 15833897347361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15833897347409) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 51576334 + ... + 51882424.

It is an arithmetic number, because the mean of its divisors is an integer number (1905070796251).

Almost surely, 2^{15833897347489} is an apocalyptic number.

15833897347489 is the 3979183-rd square number.

15833897347489 is the 1989592-nd centered octagonal number.

It is an amenable number.

15833897347489 is a deficient number, since it is larger than the sum of its proper divisors (1311739818770).

15833897347489 is an frugal number, since it uses more digits than its factorization.

15833897347489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612208 (or 306104 counting only the distinct ones).

The product of its digits is 4389396480, while the sum is 79.

The spelling of 15833897347489 in words is "fifteen trillion, eight hundred thirty-three billion, eight hundred ninety-seven million, three hundred forty-seven thousand, four hundred eighty-nine".