133511430506 has 16 divisors (see below), whose sum is σ = 203305110720. Its totient is φ = 65743539840.

The previous prime is 133511430491. The next prime is 133511430551. The reversal of 133511430506 is 605034115331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449210 + ... + 684698.

It is an arithmetic number, because the mean of its divisors is an integer number (12706569420).

Almost surely, 2^133511430506 is an apocalyptic number.

133511430506 is a deficient number, since it is larger than the sum of its proper divisors (69793680214).

133511430506 is a wasteful number, since it uses less digits than its factorization.

133511430506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239789.

The product of its (nonzero) digits is 16200, while the sum is 32.

Adding to 133511430506 its reverse (605034115331), we get a palindrome (738545545837).

The spelling of 133511430506 in words is "one hundred thirty-three billion, five hundred eleven million, four hundred thirty thousand, five hundred six".