23211153500451 has 16 divisors (see below), whose sum is σ = 35376549781248. Its totient is φ = 13260826404000.

The previous prime is 23211153500449. The next prime is 23211153500567. The reversal of 23211153500451 is 15400535111232.

It is not a de Polignac number, because 23211153500451 - 2¹ = 23211153500449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23211153500351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111972400 + ... + 112179501.

It is an arithmetic number, because the mean of its divisors is an integer number (2211034361328).

Almost surely, 2^{23211153500451} is an apocalyptic number.

23211153500451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23211153500451 is a deficient number, since it is larger than the sum of its proper divisors (12165396280797).

23211153500451 is a wasteful number, since it uses less digits than its factorization.

23211153500451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224156842.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 23211153500451 its reverse (15400535111232), we get a palindrome (38611688611683).

The spelling of 23211153500451 in words is "twenty-three trillion, two hundred eleven billion, one hundred fifty-three million, five hundred thousand, four hundred fifty-one".