1640152775138 has 8 divisors (see below), whose sum is σ = 2460236142288. Its totient is φ = 820074061044.

The previous prime is 1640152775137. The next prime is 1640152775213. The reversal of 1640152775138 is 8315772510461.

It is a happy number.

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

It is a super-2 number, since 2×1640152775138² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1640152775137) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 80456 + ... + 1812947.

It is an arithmetic number, because the mean of its divisors is an integer number (307529517786).

Almost surely, 2^{1640152775138} is an apocalyptic number.

1640152775138 is a deficient number, since it is larger than the sum of its proper divisors (820083367150).

1640152775138 is a wasteful number, since it uses less digits than its factorization.

1640152775138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326528.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 1640152775138 in words is "one trillion, six hundred forty billion, one hundred fifty-two million, seven hundred seventy-five thousand, one hundred thirty-eight".