33497784923820 has 192 divisors, whose sum is σ = 116474472038400. Its totient is φ = 7019666737920.

The previous prime is 33497784923783. The next prime is 33497784923843. The reversal of 33497784923820 is 2832948779433.

It is a super-2 number, since 2×33497784923820² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67457740 + ... + 67952499.

It is an arithmetic number, because the mean of its divisors is an integer number (606637875200).

Almost surely, 2^{33497784923820} is an apocalyptic number.

33497784923820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33497784923820 is an abundant number, since it is smaller than the sum of its proper divisors (82976687114580).

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

33497784923820 is a wasteful number, since it uses less digits than its factorization.

33497784923820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135410308 (or 135410306 counting only the distinct ones).

The product of its (nonzero) digits is 438939648, while the sum is 69.

The spelling of 33497784923820 in words is "thirty-three trillion, four hundred ninety-seven billion, seven hundred eighty-four million, nine hundred twenty-three thousand, eight hundred twenty".