156013220226205 has 4 divisors (see below), whose sum is σ = 187215864271452. Its totient is φ = 124810576180960.

The previous prime is 156013220226187. The next prime is 156013220226233. The reversal of 156013220226205 is 502622022310651.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47171031125689 + 108842189100516 = 6868117^2 + 10432746^2 .

It is not a de Polignac number, because 156013220226205 - 2¹³ = 156013220218013 is a prime.

It is a super-2 number, since 2×156013220226205² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15601322022616 + ... + 15601322022625.

It is an arithmetic number, because the mean of its divisors is an integer number (46803966067863).

Almost surely, 2^{156013220226205} is an apocalyptic number.

It is an amenable number.

156013220226205 is a deficient number, since it is larger than the sum of its proper divisors (31202644045247).

156013220226205 is an equidigital number, since it uses as much as digits as its factorization.

156013220226205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31202644045246.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 156013220226205 its reverse (502622022310651), we get a palindrome (658635242536856).

The spelling of 156013220226205 in words is "one hundred fifty-six trillion, thirteen billion, two hundred twenty million, two hundred twenty-six thousand, two hundred five".