4001471782640 has 80 divisors (see below), whose sum is σ = 9343851776640. Its totient is φ = 1593635205120.

The previous prime is 4001471782543. The next prime is 4001471782657. The reversal of 4001471782640 is 462871741004.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 4001471782591 and 4001471782600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157172792 + ... + 157198248.

It is an arithmetic number, because the mean of its divisors is an integer number (116798147208).

Almost surely, 2^{4001471782640} is an apocalyptic number.

4001471782640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4001471782640 is an abundant number, since it is smaller than the sum of its proper divisors (5342379994000).

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

4001471782640 is a wasteful number, since it uses less digits than its factorization.

4001471782640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33930 (or 33924 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 44.

The spelling of 4001471782640 in words is "four trillion, one billion, four hundred seventy-one million, seven hundred eighty-two thousand, six hundred forty".