156102344070221 has 16 divisors (see below), whose sum is σ = 157592794510080. Its totient is φ = 154619127828480.

The previous prime is 156102344070121. The next prime is 156102344070227. The reversal of 156102344070221 is 122070443201651.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156102344070221 is a prime.

It is a super-2 number, since 2×156102344070221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156102344070227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292778486 + ... + 293311176.

It is an arithmetic number, because the mean of its divisors is an integer number (9849549656880).

Almost surely, 2^{156102344070221} is an apocalyptic number.

It is an amenable number.

156102344070221 is a deficient number, since it is larger than the sum of its proper divisors (1490450439859).

156102344070221 is a wasteful number, since it uses less digits than its factorization.

156102344070221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539476.

The product of its (nonzero) digits is 80640, while the sum is 38.

Adding to 156102344070221 its reverse (122070443201651), we get a palindrome (278172787271872).

The spelling of 156102344070221 in words is "one hundred fifty-six trillion, one hundred two billion, three hundred forty-four million, seventy thousand, two hundred twenty-one".