47691437640 has 128 divisors (see below), whose sum is σ = 178378398720. Its totient is φ = 9909907200.

The previous prime is 47691437639. The next prime is 47691437671. The reversal of 47691437640 is 4673419674.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2571466 + ... + 2589945.

It is an arithmetic number, because the mean of its divisors is an integer number (1393581240).

Almost surely, 2^47691437640 is an apocalyptic number.

47691437640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47691437640 is an abundant number, since it is smaller than the sum of its proper divisors (130686961080).

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

47691437640 is a wasteful number, since it uses less digits than its factorization.

47691437640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5161443 (or 5161439 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 51.

The spelling of 47691437640 in words is "forty-seven billion, six hundred ninety-one million, four hundred thirty-seven thousand, six hundred forty".