155044030509 has 48 divisors (see below), whose sum is σ = 233245901824. Its totient is φ = 99136224000.

The previous prime is 155044030409. The next prime is 155044030543. The reversal of 155044030509 is 905030440551.

It is a de Polignac number, because none of the positive numbers 2^k-155044030509 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 (155044030409) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19248927 + ... + 19256979.

Almost surely, 2^155044030509 is an apocalyptic number.

It is an amenable number.

155044030509 is a deficient number, since it is larger than the sum of its proper divisors (78201871315).

155044030509 is a wasteful number, since it uses less digits than its factorization.

155044030509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8698 (or 8695 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 155044030509 in words is "one hundred fifty-five billion, forty-four million, thirty thousand, five hundred nine".