29940840533 has 16 divisors (see below), whose sum is σ = 31083851760. Its totient is φ = 28805414400.

The previous prime is 29940840493. The next prime is 29940840551. The reversal of 29940840533 is 33504804992.

It can be written as a sum of positive squares in 8 ways, for example, as 3689712049 + 26251128484 = 60743^2 + 162022^2 .

It is a cyclic number.

It is not a de Polignac number, because 29940840533 - 2⁶ = 29940840469 is a prime.

It is a super-3 number, since 3×29940840533³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29940840593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11875313 + ... + 11877833.

It is an arithmetic number, because the mean of its divisors is an integer number (1942740735).

Almost surely, 2^29940840533 is an apocalyptic number.

It is an amenable number.

29940840533 is a deficient number, since it is larger than the sum of its proper divisors (1143011227).

29940840533 is a wasteful number, since it uses less digits than its factorization.

29940840533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3848.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 29940840533 in words is "twenty-nine billion, nine hundred forty million, eight hundred forty thousand, five hundred thirty-three".