1640136001616 has 80 divisors (see below), whose sum is σ = 3720026331648. Its totient is φ = 685859529600.

The previous prime is 1640136001589. The next prime is 1640136001639. The reversal of 1640136001616 is 6161006310461.

It is a super-2 number, since 2×1640136001616² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4500971 + ... + 4851701.

Almost surely, 2^{1640136001616} is an apocalyptic number.

1640136001616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1640136001616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1860013165824).

1640136001616 is an abundant number, since it is smaller than the sum of its proper divisors (2079890330032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1640136001616 is a wasteful number, since it uses less digits than its factorization.

1640136001616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351760 (or 351754 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 1640136001616 in words is "one trillion, six hundred forty billion, one hundred thirty-six million, one thousand, six hundred sixteen".