33400780392 has 128 divisors (see below), whose sum is σ = 98865100800. Its totient is φ = 9200610048.

The previous prime is 33400780289. The next prime is 33400780451. The reversal of 33400780392 is 29308700433.

It is a super-2 number, since 2×33400780392² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33400780392.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3615283 + ... + 3624509.

It is an arithmetic number, because the mean of its divisors is an integer number (772383600).

Almost surely, 2^33400780392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33400780392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49432550400).

33400780392 is an abundant number, since it is smaller than the sum of its proper divisors (65464320408).

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

33400780392 is a wasteful number, since it uses less digits than its factorization.

33400780392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10015 (or 10011 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 33400780392 in words is "thirty-three billion, four hundred million, seven hundred eighty thousand, three hundred ninety-two".