133506717815 has 16 divisors (see below), whose sum is σ = 167183759808. Its totient is φ = 102155471616.

The previous prime is 133506717749. The next prime is 133506717829. The reversal of 133506717815 is 518717605331.

It is a cyclic number.

It is not a de Polignac number, because 133506717815 - 2¹⁸ = 133506455671 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133506717815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3018299 + ... + 3062211.

It is an arithmetic number, because the mean of its divisors is an integer number (10448984988).

Almost surely, 2^133506717815 is an apocalyptic number.

133506717815 is a deficient number, since it is larger than the sum of its proper divisors (33677041993).

133506717815 is a wasteful number, since it uses less digits than its factorization.

133506717815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70378.

The product of its (nonzero) digits is 529200, while the sum is 47.

The spelling of 133506717815 in words is "one hundred thirty-three billion, five hundred six million, seven hundred seventeen thousand, eight hundred fifteen".