1640593478240 has 96 divisors (see below), whose sum is σ = 4104232130880. Its totient is φ = 617584656384.

The previous prime is 1640593478231. The next prime is 1640593478297. The reversal of 1640593478240 is 428743950461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60585344 + ... + 60612416.

It is an arithmetic number, because the mean of its divisors is an integer number (42752418030).

It is a 1-persistent number, because it is pandigital, but 2⋅1640593478240 = 3281186956480 is not.

Almost surely, 2^{1640593478240} is an apocalyptic number.

1640593478240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1640593478240 is an abundant number, since it is smaller than the sum of its proper divisors (2463638652640).

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

1640593478240 is a wasteful number, since it uses less digits than its factorization.

1640593478240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49384 (or 49376 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 1640593478240 in words is "one trillion, six hundred forty billion, five hundred ninety-three million, four hundred seventy-eight thousand, two hundred forty".