33642640652 has 12 divisors (see below), whose sum is σ = 59457538896. Its totient is φ = 16654772400.

The previous prime is 33642640621. The next prime is 33642640657. The reversal of 33642640652 is 25604624633.

It is a super-2 number, since 2×33642640652² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33642640657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41636528 + ... + 41637335.

It is an arithmetic number, because the mean of its divisors is an integer number (4954794908).

Almost surely, 2^33642640652 is an apocalyptic number.

It is an amenable number.

33642640652 is a deficient number, since it is larger than the sum of its proper divisors (25814898244).

33642640652 is a wasteful number, since it uses less digits than its factorization.

33642640652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83273968 (or 83273966 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 41.

The spelling of 33642640652 in words is "thirty-three billion, six hundred forty-two million, six hundred forty thousand, six hundred fifty-two".