33419981820 has 48 divisors (see below), whose sum is σ = 94204000800. Its totient is φ = 8852180736.

The previous prime is 33419981813. The next prime is 33419981827. The reversal of 33419981820 is 2818991433.

It is an interprime number because it is at equal distance from previous prime (33419981813) and next prime (33419981827).

It is a super-2 number, since 2×33419981820² (a number of 22 digits) contains 22 as substring.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 33419981820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33419981827) 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, 1860187 + ... + 1878066.

It is an arithmetic number, because the mean of its divisors is an integer number (1962583350).

Almost surely, 2^33419981820 is an apocalyptic number.

33419981820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33419981820 is an abundant number, since it is smaller than the sum of its proper divisors (60784018980).

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

33419981820 is a wasteful number, since it uses less digits than its factorization.

33419981820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738414 (or 3738412 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 33419981820 in words is "thirty-three billion, four hundred nineteen million, nine hundred eighty-one thousand, eight hundred twenty".