155643530623 has 8 divisors (see below), whose sum is σ = 178066161792. Its totient is φ = 133267859736.

The previous prime is 155643530599. The next prime is 155643530639. The reversal of 155643530623 is 326035346551.

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 155643530623 - 2¹⁷ = 155643399551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155643530623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155643530683) 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, 11732965 + ... + 11746222.

It is an arithmetic number, because the mean of its divisors is an integer number (22258270224).

Almost surely, 2^155643530623 is an apocalyptic number.

155643530623 is a deficient number, since it is larger than the sum of its proper divisors (22422631169).

155643530623 is an equidigital number, since it uses as much as digits as its factorization.

155643530623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23480141.

The product of its (nonzero) digits is 972000, while the sum is 43.

The spelling of 155643530623 in words is "one hundred fifty-five billion, six hundred forty-three million, five hundred thirty thousand, six hundred twenty-three".