33255215551 has 12 divisors (see below), whose sum is σ = 34851973968. Its totient is φ = 31671626624.

The previous prime is 33255215531. The next prime is 33255215563. The reversal of 33255215551 is 15551255233.

It is not a de Polignac number, because 33255215551 - 2¹¹ = 33255213503 is a prime.

It is a super-2 number, since 2×33255215551² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33255215551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33255215531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1235331 + ... + 1261963.

It is an arithmetic number, because the mean of its divisors is an integer number (2904331164).

Almost surely, 2^33255215551 is an apocalyptic number.

33255215551 is a deficient number, since it is larger than the sum of its proper divisors (1596758417).

33255215551 is an equidigital number, since it uses as much as digits as its factorization.

33255215551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27122 (or 26889 counting only the distinct ones).

The product of its digits is 112500, while the sum is 37.

The spelling of 33255215551 in words is "thirty-three billion, two hundred fifty-five million, two hundred fifteen thousand, five hundred fifty-one".