1640279041275 has 36 divisors (see below), whose sum is σ = 3154691779512. Its totient is φ = 749841845760.

The previous prime is 1640279041213. The next prime is 1640279041343. The reversal of 1640279041275 is 5721409720461.

It is not a de Polignac number, because 1640279041275 - 2²³ = 1640270652667 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 223163542 + ... + 223170891.

Almost surely, 2^{1640279041275} is an apocalyptic number.

1640279041275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1640279041275 is a deficient number, since it is larger than the sum of its proper divisors (1514412738237).

1640279041275 is a wasteful number, since it uses less digits than its factorization.

1640279041275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446334460 (or 446334448 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 1640279041275 in words is "one trillion, six hundred forty billion, two hundred seventy-nine million, forty-one thousand, two hundred seventy-five".