47348986640 has 40 divisors (see below), whose sum is σ = 110369464920. Its totient is φ = 18890894336.

The previous prime is 47348986637. The next prime is 47348986649. The reversal of 47348986640 is 4668984374.

It can be written as a sum of positive squares in 4 ways, for example, as 3683033344 + 43665953296 = 60688^2 + 208964^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 47348986640.

It is not an unprimeable number, because it can be changed into a prime (47348986649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729629 + ... + 791868.

It is an arithmetic number, because the mean of its divisors is an integer number (2759236623).

Almost surely, 2^47348986640 is an apocalyptic number.

47348986640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47348986640 is an abundant number, since it is smaller than the sum of its proper divisors (63020478280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47348986640 is a wasteful number, since it uses less digits than its factorization.

47348986640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521899 (or 1521893 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 59.

The spelling of 47348986640 in words is "forty-seven billion, three hundred forty-eight million, nine hundred eighty-six thousand, six hundred forty".