1644712164474 has 16 divisors (see below), whose sum is σ = 3289552665312. Its totient is φ = 548215998768.

The previous prime is 1644712164457. The next prime is 1644712164493. The reversal of 1644712164474 is 4744612174461.

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, 5180344 + ... + 5488659.

It is an arithmetic number, because the mean of its divisors is an integer number (205597041582).

Almost surely, 2^{1644712164474} is an apocalyptic number.

1644712164474 is an abundant number, since it is smaller than the sum of its proper divisors (1644840500838).

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

1644712164474 is a wasteful number, since it uses less digits than its factorization.

1644712164474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10694701.

The product of its digits is 3612672, while the sum is 51.

The spelling of 1644712164474 in words is "one trillion, six hundred forty-four billion, seven hundred twelve million, one hundred sixty-four thousand, four hundred seventy-four".