47451215889 has 243 divisors, whose sum is σ = 93903170907. Its totient is φ = 23003164800.

The previous prime is 47451215857. The next prime is 47451215893. The reversal of 47451215889 is 98851215474.

The square root of 47451215889 is 217833.

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

47451215889 is a `hidden beast` number, since 4 + 7 + 4 + 51 + 2 + 1 + 588 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2286465489 + 45164750400 = 47817^2 + 212520^2 .

It is not a de Polignac number, because 47451215889 - 2⁵ = 47451215857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47451215089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 242 ways as a sum of consecutive naturals, for example, 1157346709 + ... + 1157346749.

Almost surely, 2^47451215889 is an apocalyptic number.

47451215889 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

47451215889 is the 217833-rd square number.

47451215889 is the 108917-th centered octagonal number.

It is an amenable number.

47451215889 is a deficient number, since it is larger than the sum of its proper divisors (46451955018).

47451215889 is a wasteful number, since it uses less digits than its factorization.

47451215889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 85 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The spelling of 47451215889 in words is "forty-seven billion, four hundred fifty-one million, two hundred fifteen thousand, eight hundred eighty-nine".