133531212315561 has 16 divisors (see below), whose sum is σ = 188727183356544. Its totient is φ = 83689832002304.

The previous prime is 133531212315547. The next prime is 133531212315577. The reversal of 133531212315561 is 165513212135331.

It is a cyclic number.

It is not a de Polignac number, because 133531212315561 - 2⁷ = 133531212315433 is a prime.

It is a super-3 number, since 3×133531212315561³ (a number of 43 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (133531212311561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1475861790 + ... + 1475952263.

It is an arithmetic number, because the mean of its divisors is an integer number (11795448959784).

Almost surely, 2^{133531212315561} is an apocalyptic number.

It is an amenable number.

133531212315561 is a deficient number, since it is larger than the sum of its proper divisors (55195971040983).

133531212315561 is a wasteful number, since it uses less digits than its factorization.

133531212315561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951814960.

The product of its digits is 243000, while the sum is 42.

The spelling of 133531212315561 in words is "one hundred thirty-three trillion, five hundred thirty-one billion, two hundred twelve million, three hundred fifteen thousand, five hundred sixty-one".