1640240245615 has 32 divisors (see below), whose sum is σ = 2043619540992. Its totient is φ = 1262472480000.

The previous prime is 1640240245529. The next prime is 1640240245663. The reversal of 1640240245615 is 5165420420461.

It is not a de Polignac number, because 1640240245615 - 2¹⁷ = 1640240114543 is a prime.

It is a super-3 number, since 3×1640240245615³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53303224 + ... + 53333986.

It is an arithmetic number, because the mean of its divisors is an integer number (63863110656).

Almost surely, 2^{1640240245615} is an apocalyptic number.

1640240245615 is a deficient number, since it is larger than the sum of its proper divisors (403379295377).

1640240245615 is a wasteful number, since it uses less digits than its factorization.

1640240245615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32791.

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 1640240245615 in words is "one trillion, six hundred forty billion, two hundred forty million, two hundred forty-five thousand, six hundred fifteen".