33943386540 has 96 divisors (see below), whose sum is σ = 109738750464. Its totient is φ = 7678494720.

The previous prime is 33943386527. The next prime is 33943386563. The reversal of 33943386540 is 4568334933.

It is a self number, because there is not a number n which added to its sum of digits gives 33943386540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 375846 + ... + 457325.

It is an arithmetic number, because the mean of its divisors is an integer number (1143111984).

Almost surely, 2^33943386540 is an apocalyptic number.

33943386540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33943386540 is an abundant number, since it is smaller than the sum of its proper divisors (75795363924).

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

33943386540 is a wasteful number, since it uses less digits than its factorization.

33943386540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833287 (or 833285 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 48.

The spelling of 33943386540 in words is "thirty-three billion, nine hundred forty-three million, three hundred eighty-six thousand, five hundred forty".