2640643833470 has 16 divisors (see below), whose sum is σ = 4753314990720. Its totient is φ = 1056222846624.

The previous prime is 2640643833461. The next prime is 2640643833493. The reversal of 2640643833470 is 743383460462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4014977 + ... + 4626156.

It is an arithmetic number, because the mean of its divisors is an integer number (297082186920).

Almost surely, 2^{2640643833470} is an apocalyptic number.

2640643833470 is a deficient number, since it is larger than the sum of its proper divisors (2112671157250).

2640643833470 is a wasteful number, since it uses less digits than its factorization.

2640643833470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8671699.

The product of its (nonzero) digits is 6967296, while the sum is 50.

The spelling of 2640643833470 in words is "two trillion, six hundred forty billion, six hundred forty-three million, eight hundred thirty-three thousand, four hundred seventy".