155342245405 has 8 divisors (see below), whose sum is σ = 191448821592. Its totient is φ = 120915044928.

The previous prime is 155342245403. The next prime is 155342245427. The reversal of 155342245405 is 504542243551.

It can be written as a sum of positive squares in 4 ways, for example, as 53317580836 + 102024664569 = 230906^2 + 319413^2 .

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 155342245405 - 2¹ = 155342245403 is a prime.

It is a super-2 number, since 2×155342245405² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155342245403) 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, 419843722 + ... + 419844091.

It is an arithmetic number, because the mean of its divisors is an integer number (23931102699).

Almost surely, 2^155342245405 is an apocalyptic number.

It is an amenable number.

155342245405 is a deficient number, since it is larger than the sum of its proper divisors (36106576187).

155342245405 is an equidigital number, since it uses as much as digits as its factorization.

155342245405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839687855.

The product of its (nonzero) digits is 480000, while the sum is 40.

Adding to 155342245405 its reverse (504542243551), we get a palindrome (659884488956).

The spelling of 155342245405 in words is "one hundred fifty-five billion, three hundred forty-two million, two hundred forty-five thousand, four hundred five".