1109464062721 has 9 divisors (see below), whose sum is σ = 1290609629571. Its totient is φ = 950962876752.

The previous prime is 1109464062709. The next prime is 1109464062743. The reversal of 1109464062721 is 1272604649011.

The square root of 1109464062721 is 1053311.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 464231009025 + 645233053696 = 681345^2 + 803264^2 .

It is not a de Polignac number, because 1109464062721 - 2²¹ = 1109461965569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1109464062761) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7297941 + ... + 7448413.

Almost surely, 2^{1109464062721} is an apocalyptic number.

1109464062721 is the 1053311-st square number.

1109464062721 is the 526656-th centered octagonal number.

It is an amenable number.

1109464062721 is a deficient number, since it is larger than the sum of its proper divisors (181145566850).

1109464062721 is an frugal number, since it uses more digits than its factorization.

1109464062721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300960 (or 150480 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 1109464062721 in words is "one trillion, one hundred nine billion, four hundred sixty-four million, sixty-two thousand, seven hundred twenty-one".