1545456221066 has 16 divisors (see below), whose sum is σ = 2497006407168. Its totient is φ = 715288292400.

The previous prime is 1545456221051. The next prime is 1545456221129. The reversal of 1545456221066 is 6601226545451.

It is a self number, because there is not a number n which added to its sum of digits gives 1545456221066.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541883645 + ... + 541886496.

It is an arithmetic number, because the mean of its divisors is an integer number (156062900448).

Almost surely, 2^{1545456221066} is an apocalyptic number.

1545456221066 is a deficient number, since it is larger than the sum of its proper divisors (951550186102).

1545456221066 is a wasteful number, since it uses less digits than its factorization.

1545456221066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083770197.

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 1545456221066 in words is "one trillion, five hundred forty-five billion, four hundred fifty-six million, two hundred twenty-one thousand, sixty-six".