33936543972 has 96 divisors (see below), whose sum is σ = 89393539200. Its totient is φ = 11131623936.

The previous prime is 33936543961. The next prime is 33936543989. The reversal of 33936543972 is 27934563933.

33936543972 is a `hidden beast` number, since 3 + 3 + 9 + 3 + 6 + 543 + 97 + 2 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 3598279 + ... + 3607697.

It is an arithmetic number, because the mean of its divisors is an integer number (931182700).

Almost surely, 2^33936543972 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 33936543972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44696769600).

33936543972 is an abundant number, since it is smaller than the sum of its proper divisors (55456995228).

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

33936543972 is a wasteful number, since it uses less digits than its factorization.

33936543972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9962 (or 9954 counting only the distinct ones).

The product of its digits is 11022480, while the sum is 54.

The spelling of 33936543972 in words is "thirty-three billion, nine hundred thirty-six million, five hundred forty-three thousand, nine hundred seventy-two".