1640247566410 has 8 divisors (see below), whose sum is σ = 2952445619556. Its totient is φ = 656099026560.

The previous prime is 1640247566351. The next prime is 1640247566413. The reversal of 1640247566410 is 146657420461.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1631651124321 + 8596442089 = 1277361^2 + 92717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1640247566410² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1640247566413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82012378311 + ... + 82012378330.

Almost surely, 2^{1640247566410} is an apocalyptic number.

1640247566410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1640247566410 is a deficient number, since it is larger than the sum of its proper divisors (1312198053146).

1640247566410 is a wasteful number, since it uses less digits than its factorization.

1640247566410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164024756648.

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 1640247566410 in words is "one trillion, six hundred forty billion, two hundred forty-seven million, five hundred sixty-six thousand, four hundred ten".