155244613687 has 16 divisors (see below), whose sum is σ = 159011385120. Its totient is φ = 151521840000.

The previous prime is 155244613661. The next prime is 155244613721. The reversal of 155244613687 is 786316442551.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155244613687 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 (155244613627) 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, 4099813 + ... + 4137505.

It is an arithmetic number, because the mean of its divisors is an integer number (9938211570).

Almost surely, 2^155244613687 is an apocalyptic number.

155244613687 is a deficient number, since it is larger than the sum of its proper divisors (3766771433).

155244613687 is a wasteful number, since it uses less digits than its factorization.

155244613687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38274.

The product of its digits is 4838400, while the sum is 52.

The spelling of 155244613687 in words is "one hundred fifty-five billion, two hundred forty-four million, six hundred thirteen thousand, six hundred eighty-seven".