1640613443005 has 32 divisors (see below), whose sum is σ = 2092015641600. Its totient is φ = 1232777693952.

The previous prime is 1640613442997. The next prime is 1640613443033. The reversal of 1640613443005 is 5003443160461.

It is a cyclic number.

It is not a de Polignac number, because 1640613443005 - 2³ = 1640613442997 is a prime.

It is a super-2 number, since 2×1640613443005² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37313064 + ... + 37357006.

It is an arithmetic number, because the mean of its divisors is an integer number (65375488800).

Almost surely, 2^{1640613443005} is an apocalyptic number.

It is an amenable number.

1640613443005 is a deficient number, since it is larger than the sum of its proper divisors (451402198595).

1640613443005 is a wasteful number, since it uses less digits than its factorization.

1640613443005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50973.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 1640613443005 in words is "one trillion, six hundred forty billion, six hundred thirteen million, four hundred forty-three thousand, five".