156644256252 has 96 divisors (see below), whose sum is σ = 407649521664. Its totient is φ = 46408369600.

The previous prime is 156644256229. The next prime is 156644256271. The reversal of 156644256252 is 252652446651.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6011083 + ... + 6037085.

It is an arithmetic number, because the mean of its divisors is an integer number (4246349184).

Almost surely, 2^156644256252 is an apocalyptic number.

156644256252 is a gapful number since it is divisible by the number (12) 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 156644256252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203824760832).

156644256252 is an abundant number, since it is smaller than the sum of its proper divisors (251005265412).

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

156644256252 is a wasteful number, since it uses less digits than its factorization.

156644256252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27039 (or 27037 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 48.

The spelling of 156644256252 in words is "one hundred fifty-six billion, six hundred forty-four million, two hundred fifty-six thousand, two hundred fifty-two".