155242424015245 has 12 divisors (see below), whose sum is σ = 216705751074684. Its totient is φ = 106451947896000.

The previous prime is 155242424015207. The next prime is 155242424015251. The reversal of 155242424015245 is 542510424242551.

It can be written as a sum of positive squares in 2 ways, for example, as 58662333629956 + 96580090385289 = 7659134^2 + 9827517^2 .

It is not a de Polignac number, because 155242424015245 - 2³¹ = 155240276531597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155242424015195 and 155242424015204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 316821273256 + ... + 316821273745.

It is an arithmetic number, because the mean of its divisors is an integer number (18058812589557).

Almost surely, 2^{155242424015245} is an apocalyptic number.

It is an amenable number.

155242424015245 is a deficient number, since it is larger than the sum of its proper divisors (61463327059439).

155242424015245 is an equidigital number, since it uses as much as digits as its factorization.

155242424015245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633642547020 (or 633642547013 counting only the distinct ones).

The product of its (nonzero) digits is 2560000, while the sum is 46.

Adding to 155242424015245 its reverse (542510424242551), we get a palindrome (697752848257796).

The spelling of 155242424015245 in words is "one hundred fifty-five trillion, two hundred forty-two billion, four hundred twenty-four million, fifteen thousand, two hundred forty-five".