133511430505 has 16 divisors (see below), whose sum is σ = 169079601600. Its totient is φ = 100927460160.

The previous prime is 133511430491. The next prime is 133511430551. The reversal of 133511430505 is 505034115331.

It is a de Polignac number, because none of the positive numbers 2^k-133511430505 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1769451 + ... + 1843360.

It is an arithmetic number, because the mean of its divisors is an integer number (10567475100).

Almost surely, 2^133511430505 is an apocalyptic number.

It is an amenable number.

133511430505 is a deficient number, since it is larger than the sum of its proper divisors (35568171095).

133511430505 is a wasteful number, since it uses less digits than its factorization.

133511430505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613224.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 133511430505 its reverse (505034115331), we get a palindrome (638545545836).

The spelling of 133511430505 in words is "one hundred thirty-three billion, five hundred eleven million, four hundred thirty thousand, five hundred five".