28233149633251 has 4 divisors (see below), whose sum is σ = 28233397552032. Its totient is φ = 28232901714472.

The previous prime is 28233149633239. The next prime is 28233149633267. The reversal of 28233149633251 is 15233694133282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28233149633251 - 2⁷ = 28233149633123 is a prime.

It is a super-2 number, since 2×28233149633251² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28233149633201) 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, 123788491 + ... + 124016356.

It is an arithmetic number, because the mean of its divisors is an integer number (7058349388008).

Almost surely, 2^{28233149633251} is an apocalyptic number.

28233149633251 is a deficient number, since it is larger than the sum of its proper divisors (247918781).

28233149633251 is a wasteful number, since it uses less digits than its factorization.

28233149633251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247918780.

The product of its digits is 5598720, while the sum is 52.

The spelling of 28233149633251 in words is "twenty-eight trillion, two hundred thirty-three billion, one hundred forty-nine million, six hundred thirty-three thousand, two hundred fifty-one".