155133340565 has 8 divisors (see below), whose sum is σ = 212754295680. Its totient is φ = 106377147792.

The previous prime is 155133340561. The next prime is 155133340603. The reversal of 155133340565 is 565043331551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155133340565 - 2² = 155133340561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155133340561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2216190545 + ... + 2216190614.

It is an arithmetic number, because the mean of its divisors is an integer number (26594286960).

Almost surely, 2^155133340565 is an apocalyptic number.

It is an amenable number.

155133340565 is a deficient number, since it is larger than the sum of its proper divisors (57620955115).

155133340565 is an equidigital number, since it uses as much as digits as its factorization.

155133340565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432381171.

The product of its (nonzero) digits is 405000, while the sum is 41.

The spelling of 155133340565 in words is "one hundred fifty-five billion, one hundred thirty-three million, three hundred forty thousand, five hundred sixty-five".