47531415781456 has 20 divisors (see below), whose sum is σ = 92106789629812. Its totient is φ = 23761921683456.

The previous prime is 47531415781397. The next prime is 47531415781471. The reversal of 47531415781456 is 65418751413574.

It can be written as a sum of positive squares in 2 ways, for example, as 45359093527056 + 2172322254400 = 6734916^2 + 1473880^2 .

It is a junction number, because it is equal to n+sod(n) for n = 47531415781394 and 47531415781403.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 236534385 + ... + 236735248.

Almost surely, 2^{47531415781456} is an apocalyptic number.

It is an amenable number.

47531415781456 is a deficient number, since it is larger than the sum of its proper divisors (44575373848356).

47531415781456 is a wasteful number, since it uses less digits than its factorization.

47531415781456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473275918 (or 473275912 counting only the distinct ones).

The product of its digits is 56448000, while the sum is 61.

The spelling of 47531415781456 in words is "forty-seven trillion, five hundred thirty-one billion, four hundred fifteen million, seven hundred eighty-one thousand, four hundred fifty-six".