1645414042026 has 32 divisors (see below), whose sum is σ = 3467799129600. Its totient is φ = 519038999280.

The previous prime is 1645414042001. The next prime is 1645414042031. The reversal of 1645414042026 is 6202404145461.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7748040 + ... + 7957571.

It is an arithmetic number, because the mean of its divisors is an integer number (108368722800).

Almost surely, 2^{1645414042026} is an apocalyptic number.

1645414042026 is an abundant number, since it is smaller than the sum of its proper divisors (1822385087574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1645414042026 is a wasteful number, since it uses less digits than its factorization.

1645414042026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15706554.

The product of its (nonzero) digits is 184320, while the sum is 39.

Adding to 1645414042026 its reverse (6202404145461), we get a palindrome (7847818187487).

The spelling of 1645414042026 in words is "one trillion, six hundred forty-five billion, four hundred fourteen million, forty-two thousand, twenty-six".