33223015851481 has 9 divisors (see below), whose sum is σ = 33436886025981. Its totient is φ = 33010505110752.

The previous prime is 33223015851461. The next prime is 33223015851523. The reversal of 33223015851481 is 18415851032233.

The square root of 33223015851481 is 5763941.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1105633323081 + 32117382528400 = 1051491^2 + 5667220^2 .

It is not a de Polignac number, because 33223015851481 - 2¹¹ = 33223015849433 is a prime.

It is a super-2 number, since 2×33223015851481² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33223015851451) 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, 904920381 + ... + 904957093.

Almost surely, 2^{33223015851481} is an apocalyptic number.

33223015851481 is the 5763941-st square number.

33223015851481 is the 2881971-st centered octagonal number.

It is an amenable number.

33223015851481 is a deficient number, since it is larger than the sum of its proper divisors (213870174500).

33223015851481 is an frugal number, since it uses more digits than its factorization.

33223015851481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73740 (or 36870 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 33223015851481 in words is "thirty-three trillion, two hundred twenty-three billion, fifteen million, eight hundred fifty-one thousand, four hundred eighty-one".