1640175040426 has 12 divisors (see below), whose sum is σ = 2664071294022. Its totient is φ = 757003864656.

The previous prime is 1640175040379. The next prime is 1640175040453. The reversal of 1640175040426 is 6240405710461.

It can be written as a sum of positive squares in 3 ways, for example, as 546048580401 + 1094126460025 = 738951^2 + 1046005^2 .

It is a super-2 number, since 2×1640175040426² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2426294101 + ... + 2426294776.

Almost surely, 2^{1640175040426} is an apocalyptic number.

1640175040426 is a deficient number, since it is larger than the sum of its proper divisors (1023896253596).

1640175040426 is a wasteful number, since it uses less digits than its factorization.

1640175040426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4852588905 (or 4852588892 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 1640175040426 in words is "one trillion, six hundred forty billion, one hundred seventy-five million, forty thousand, four hundred twenty-six".