33687220055 has 4 divisors (see below), whose sum is σ = 40424664072. Its totient is φ = 26949776040.

The previous prime is 33687220037. The next prime is 33687220079. The reversal of 33687220055 is 55002278633.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55002278633 = 193937 ⋅283609.

It is not a de Polignac number, because 33687220055 - 2¹² = 33687215959 is a prime.

It is a super-2 number, since 2×33687220055² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33687219994 and 33687220021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3368722001 + ... + 3368722010.

It is an arithmetic number, because the mean of its divisors is an integer number (10106166018).

Almost surely, 2^33687220055 is an apocalyptic number.

33687220055 is a deficient number, since it is larger than the sum of its proper divisors (6737444017).

33687220055 is an equidigital number, since it uses as much as digits as its factorization.

33687220055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6737444016.

The product of its (nonzero) digits is 302400, while the sum is 41.

Adding to 33687220055 its reverse (55002278633), we get a palindrome (88689498688).

The spelling of 33687220055 in words is "thirty-three billion, six hundred eighty-seven million, two hundred twenty thousand, fifty-five".