47978937382489 has 9 divisors (see below), whose sum is σ = 48287576680767. Its totient is φ = 47672258492664.

The previous prime is 47978937382451. The next prime is 47978937382501. The reversal of 47978937382489 is 98428373987974.

The square root of 47978937382489 is 6926683.

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., 14063362513225 + 33915574869264 = 3750115^2 + 5823708^2 .

It is not a de Polignac number, because 47978937382489 - 2¹³ = 47978937374297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47978937392489) 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, 1087467172 + ... + 1087511290.

It is an arithmetic number, because the mean of its divisors is an integer number (5365286297863).

Almost surely, 2^{47978937382489} is an apocalyptic number.

47978937382489 is the 6926683-rd square number.

47978937382489 is the 3463342-nd centered octagonal number.

It is an amenable number.

47978937382489 is a deficient number, since it is larger than the sum of its proper divisors (308639298278).

47978937382489 is an frugal number, since it uses more digits than its factorization.

47978937382489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88552 (or 44276 counting only the distinct ones).

The product of its digits is 36870930432, while the sum is 88.

The spelling of 47978937382489 in words is "forty-seven trillion, nine hundred seventy-eight billion, nine hundred thirty-seven million, three hundred eighty-two thousand, four hundred eighty-nine".