155220012413 has 4 divisors (see below), whose sum is σ = 155251675488. Its totient is φ = 155188349340.

The previous prime is 155220012377. The next prime is 155220012419. The reversal of 155220012413 is 314210022551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 155220012413 - 2¹⁶ = 155219946877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155220012419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15824183 + ... + 15833988.

It is an arithmetic number, because the mean of its divisors is an integer number (38812918872).

Almost surely, 2^155220012413 is an apocalyptic number.

It is an amenable number.

155220012413 is a deficient number, since it is larger than the sum of its proper divisors (31663075).

155220012413 is an equidigital number, since it uses as much as digits as its factorization.

155220012413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31663074.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 155220012413 its reverse (314210022551), we get a palindrome (469430034964).

The spelling of 155220012413 in words is "one hundred fifty-five billion, two hundred twenty million, twelve thousand, four hundred thirteen".