133556730761 has 32 divisors (see below), whose sum is σ = 148950278400. Its totient is φ = 119245271040.

The previous prime is 133556730739. The next prime is 133556730781. The reversal of 133556730761 is 167037655331.

It is a cyclic number.

It is not a de Polignac number, because 133556730761 - 2²² = 133552536457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133556730701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3884516 + ... + 3918746.

It is an arithmetic number, because the mean of its divisors is an integer number (4654696200).

Almost surely, 2^133556730761 is an apocalyptic number.

It is an amenable number.

133556730761 is a deficient number, since it is larger than the sum of its proper divisors (15393547639).

133556730761 is a wasteful number, since it uses less digits than its factorization.

133556730761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34449.

The product of its (nonzero) digits is 1190700, while the sum is 47.

The spelling of 133556730761 in words is "one hundred thirty-three billion, five hundred fifty-six million, seven hundred thirty thousand, seven hundred sixty-one".