155343212013 has 32 divisors (see below), whose sum is σ = 241745241600. Its totient is φ = 87730084800.

The previous prime is 155343211987. The next prime is 155343212029. The reversal of 155343212013 is 310212343551.

It is not a de Polignac number, because 155343212013 - 2⁹ = 155343211501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155343212033) 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, 1992543 + ... + 2069036.

It is an arithmetic number, because the mean of its divisors is an integer number (7554538800).

Almost surely, 2^155343212013 is an apocalyptic number.

It is an amenable number.

155343212013 is a deficient number, since it is larger than the sum of its proper divisors (86402029587).

155343212013 is a wasteful number, since it uses less digits than its factorization.

155343212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4061673.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 155343212013 its reverse (310212343551), we get a palindrome (465555555564).

The spelling of 155343212013 in words is "one hundred fifty-five billion, three hundred forty-three million, two hundred twelve thousand, thirteen".