1640375262879 has 8 divisors (see below), whose sum is σ = 2188584500352. Its totient is φ = 1092874767000.

The previous prime is 1640375262781. The next prime is 1640375262913. The reversal of 1640375262879 is 9782625730461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1640375262879 - 2¹⁶ = 1640375197343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640375261879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177179997 + ... + 177189254.

It is an arithmetic number, because the mean of its divisors is an integer number (273573062544).

It is a 1-persistent number, because it is pandigital, but 2⋅1640375262879 = 3280750525758 is not.

Almost surely, 2^{1640375262879} is an apocalyptic number.

1640375262879 is a deficient number, since it is larger than the sum of its proper divisors (548209237473).

1640375262879 is a wasteful number, since it uses less digits than its factorization.

1640375262879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354370797.

The product of its (nonzero) digits is 30481920, while the sum is 60.

The spelling of 1640375262879 in words is "one trillion, six hundred forty billion, three hundred seventy-five million, two hundred sixty-two thousand, eight hundred seventy-nine".