156216007220 has 144 divisors (see below), whose sum is σ = 411210753408. Its totient is φ = 49410627840.

The previous prime is 156216007219. The next prime is 156216007237. The reversal of 156216007220 is 22700612651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34535879 + ... + 34540401.

It is an arithmetic number, because the mean of its divisors is an integer number (2855630232).

Almost surely, 2^156216007220 is an apocalyptic number.

156216007220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156216007220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205605376704).

156216007220 is an abundant number, since it is smaller than the sum of its proper divisors (254994746188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156216007220 is a wasteful number, since it uses less digits than its factorization.

156216007220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7270 (or 7261 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 156216007220 its reverse (22700612651), we get a palindrome (178916619871).

The spelling of 156216007220 in words is "one hundred fifty-six billion, two hundred sixteen million, seven thousand, two hundred twenty".