1640400152875 has 16 divisors (see below), whose sum is σ = 2233330246368. Its totient is φ = 1193018292000.

The previous prime is 1640400152837. The next prime is 1640400152921. The reversal of 1640400152875 is 5782510040461.

It is not a de Polignac number, because 1640400152875 - 2¹¹ = 1640400150827 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 596507772 + ... + 596510521.

It is an arithmetic number, because the mean of its divisors is an integer number (139583140398).

Almost surely, 2^{1640400152875} is an apocalyptic number.

1640400152875 is a deficient number, since it is larger than the sum of its proper divisors (592930093493).

1640400152875 is a wasteful number, since it uses less digits than its factorization.

1640400152875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193018319 (or 1193018309 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 1640400152875 in words is "one trillion, six hundred forty billion, four hundred million, one hundred fifty-two thousand, eight hundred seventy-five".