33487221887 has 16 divisors (see below), whose sum is σ = 41014405632. Its totient is φ = 26713320480.

The previous prime is 33487221857. The next prime is 33487221913. The reversal of 33487221887 is 78812278433.

It is not a de Polignac number, because 33487221887 - 2¹⁰ = 33487220863 is a prime.

It is a super-3 number, since 3×33487221887³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33487221847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2804789 + ... + 2816702.

It is an arithmetic number, because the mean of its divisors is an integer number (2563400352).

Almost surely, 2^33487221887 is an apocalyptic number.

33487221887 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

33487221887 is a deficient number, since it is larger than the sum of its proper divisors (7527183745).

33487221887 is a wasteful number, since it uses less digits than its factorization.

33487221887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5621558.

The product of its digits is 3612672, while the sum is 53.

The spelling of 33487221887 in words is "thirty-three billion, four hundred eighty-seven million, two hundred twenty-one thousand, eight hundred eighty-seven".