133601436520061 has 4 divisors (see below), whose sum is σ = 134421077235072. Its totient is φ = 132781795805052.

The previous prime is 133601436519997. The next prime is 133601436520229. The reversal of 133601436520061 is 160025634106331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133601436520061 - 2⁶ = 133601436519997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133601436520561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409820357261 + ... + 409820357586.

It is an arithmetic number, because the mean of its divisors is an integer number (33605269308768).

Almost surely, 2^{133601436520061} is an apocalyptic number.

It is an amenable number.

133601436520061 is a deficient number, since it is larger than the sum of its proper divisors (819640715011).

133601436520061 is an equidigital number, since it uses as much as digits as its factorization.

133601436520061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819640715010.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 133601436520061 in words is "one hundred thirty-three trillion, six hundred one billion, four hundred thirty-six million, five hundred twenty thousand, sixty-one".