33400780404 has 12 divisors (see below), whose sum is σ = 77935154304. Its totient is φ = 11133593464.

The previous prime is 33400780289. The next prime is 33400780451. The reversal of 33400780404 is 40408700433.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×33400780404² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391699172 + ... + 1391699195.

It is an arithmetic number, because the mean of its divisors is an integer number (6494596192).

Almost surely, 2^33400780404 is an apocalyptic number.

It is an amenable number.

33400780404 is an abundant number, since it is smaller than the sum of its proper divisors (44534373900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33400780404 is a wasteful number, since it uses less digits than its factorization.

33400780404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783398374 (or 2783398372 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The spelling of 33400780404 in words is "thirty-three billion, four hundred million, seven hundred eighty thousand, four hundred four".