155116641221223 has 32 divisors (see below), whose sum is σ = 227860550233344. Its totient is φ = 93078295200000.

The previous prime is 155116641221137. The next prime is 155116641221231. The reversal of 155116641221223 is 322122146611551.

155116641221223 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155116641221223 - 2¹⁰ = 155116641220199 is a prime.

It is a super-2 number, since 2×155116641221223² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155116641221623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 414074683 + ... + 414449123.

It is an arithmetic number, because the mean of its divisors is an integer number (7120642194792).

Almost surely, 2^{155116641221223} is an apocalyptic number.

155116641221223 is a deficient number, since it is larger than the sum of its proper divisors (72743909012121).

155116641221223 is a wasteful number, since it uses less digits than its factorization.

155116641221223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498847.

The product of its digits is 172800, while the sum is 42.

Adding to 155116641221223 its reverse (322122146611551), we get a palindrome (477238787832774).

The spelling of 155116641221223 in words is "one hundred fifty-five trillion, one hundred sixteen billion, six hundred forty-one million, two hundred twenty-one thousand, two hundred twenty-three".