1643272610474 has 32 divisors (see below), whose sum is σ = 2806288136064. Its totient is φ = 714368596480.

The previous prime is 1643272610389. The next prime is 1643272610593. The reversal of 1643272610474 is 4740162723461.

It is a Curzon number.

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, 3542642 + ... + 3979554.

It is an arithmetic number, because the mean of its divisors is an integer number (87696504252).

Almost surely, 2^{1643272610474} is an apocalyptic number.

1643272610474 is a deficient number, since it is larger than the sum of its proper divisors (1163015525590).

1643272610474 is a wasteful number, since it uses less digits than its factorization.

1643272610474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444382.

The product of its (nonzero) digits is 1354752, while the sum is 47.

The spelling of 1643272610474 in words is "one trillion, six hundred forty-three billion, two hundred seventy-two million, six hundred ten thousand, four hundred seventy-four".