1640162350641 has 8 divisors (see below), whose sum is σ = 2315523318624. Its totient is φ = 1029121474880.

The previous prime is 1640162350543. The next prime is 1640162350643. The reversal of 1640162350641 is 1460532610461.

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 1640162350641 - 2⁷ = 1640162350513 is a prime.

It is a super-2 number, since 2×1640162350641² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1640162350641.

It is not an unprimeable number, because it can be changed into a prime (1640162350643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16080022995 + ... + 16080023096.

It is an arithmetic number, because the mean of its divisors is an integer number (289440414828).

Almost surely, 2^{1640162350641} is an apocalyptic number.

It is an amenable number.

1640162350641 is a deficient number, since it is larger than the sum of its proper divisors (675360967983).

1640162350641 is a wasteful number, since it uses less digits than its factorization.

1640162350641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32160046111.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 1640162350641 in words is "one trillion, six hundred forty billion, one hundred sixty-two million, three hundred fifty thousand, six hundred forty-one".