33390408646 has 16 divisors (see below), whose sum is σ = 57747258144. Its totient is φ = 14183535744.

The previous prime is 33390408619. The next prime is 33390408647. The reversal of 33390408646 is 64680409333.

It is a super-2 number, since 2×33390408646² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33390408596 and 33390408605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33390408647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10551645 + ... + 10554808.

It is an arithmetic number, because the mean of its divisors is an integer number (3609203634).

Almost surely, 2^33390408646 is an apocalyptic number.

33390408646 is a deficient number, since it is larger than the sum of its proper divisors (24356849498).

33390408646 is a wasteful number, since it uses less digits than its factorization.

33390408646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21106575.

The product of its (nonzero) digits is 1119744, while the sum is 46.

The spelling of 33390408646 in words is "thirty-three billion, three hundred ninety million, four hundred eight thousand, six hundred forty-six".