33400622649 has 4 divisors (see below), whose sum is σ = 44534163536. Its totient is φ = 22267081764.

The previous prime is 33400622639. The next prime is 33400622663. The reversal of 33400622649 is 94622600433.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 33400622649 - 2¹¹ = 33400620601 is a prime.

It is a super-2 number, since 2×33400622649² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33400622639) 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 3 ways as a sum of consecutive naturals, for example, 5566770439 + ... + 5566770444.

It is an arithmetic number, because the mean of its divisors is an integer number (11133540884).

Almost surely, 2^33400622649 is an apocalyptic number.

It is an amenable number.

33400622649 is a deficient number, since it is larger than the sum of its proper divisors (11133540887).

33400622649 is a wasteful number, since it uses less digits than its factorization.

33400622649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11133540886.

The product of its (nonzero) digits is 186624, while the sum is 39.

The spelling of 33400622649 in words is "thirty-three billion, four hundred million, six hundred twenty-two thousand, six hundred forty-nine".