47382492581 has 16 divisors (see below), whose sum is σ = 50078246400. Its totient is φ = 44707260528.

The previous prime is 47382492569. The next prime is 47382492583. The reversal of 47382492581 is 18529428374.

47382492581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47382492581 - 2²² = 47378298277 is a prime.

It is a super-2 number, since 2×47382492581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47382492583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6019010 + ... + 6026876.

It is an arithmetic number, because the mean of its divisors is an integer number (3129890400).

Almost surely, 2^47382492581 is an apocalyptic number.

It is an amenable number.

47382492581 is a deficient number, since it is larger than the sum of its proper divisors (2695753819).

47382492581 is a wasteful number, since it uses less digits than its factorization.

47382492581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9128.

The product of its digits is 3870720, while the sum is 53.

The spelling of 47382492581 in words is "forty-seven billion, three hundred eighty-two million, four hundred ninety-two thousand, five hundred eighty-one".