2179461064640 has 56 divisors (see below), whose sum is σ = 5287763242080. Its totient is φ = 855335656448.

The previous prime is 2179461064621. The next prime is 2179461064643. The reversal of 2179461064640 is 464601649712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2179461064643) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 64236020 + ... + 64269939.

Almost surely, 2^{2179461064640} is an apocalyptic number.

2179461064640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2179461064640 is an abundant number, since it is smaller than the sum of its proper divisors (3108302177440).

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

2179461064640 is a wasteful number, since it uses less digits than its factorization.

2179461064640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128506029 (or 128506019 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 2179461064640 in words is "two trillion, one hundred seventy-nine billion, four hundred sixty-one million, sixty-four thousand, six hundred forty".