1640556301513 has 8 divisors (see below), whose sum is σ = 1641607140960. Its totient is φ = 1639505593440.

The previous prime is 1640556301499. The next prime is 1640556301541. The reversal of 1640556301513 is 3151036550461.

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

It is a cyclic number.

It is not a de Polignac number, because 1640556301513 - 2²¹ = 1640554204361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1640556301213) 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 7 ways as a sum of consecutive naturals, for example, 39914133 + ... + 39955213.

It is an arithmetic number, because the mean of its divisors is an integer number (205200892620).

Almost surely, 2^{1640556301513} is an apocalyptic number.

It is an amenable number.

1640556301513 is a deficient number, since it is larger than the sum of its proper divisors (1050839447).

1640556301513 is a wasteful number, since it uses less digits than its factorization.

1640556301513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65687.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 1640556301513 in words is "one trillion, six hundred forty billion, five hundred fifty-six million, three hundred one thousand, five hundred thirteen".