33683661312 has 80 divisors (see below), whose sum is σ = 102554751552. Its totient is φ = 9623900160.

The previous prime is 33683661283. The next prime is 33683661313. The reversal of 33683661312 is 21316638633.

It is a super-2 number, since 2×33683661312² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (33683661313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1555639 + ... + 1577142.

Almost surely, 2^33683661312 is an apocalyptic number.

33683661312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

33683661312 is an abundant number, since it is smaller than the sum of its proper divisors (68871090240).

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

33683661312 is an equidigital number, since it uses as much as digits as its factorization.

33683661312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132809 (or 3132793 counting only the distinct ones).

The product of its digits is 279936, while the sum is 42.

The spelling of 33683661312 in words is "thirty-three billion, six hundred eighty-three million, six hundred sixty-one thousand, three hundred twelve".