156138333768 has 96 divisors (see below), whose sum is σ = 429598074360. Its totient is φ = 51224555520.

The previous prime is 156138333751. The next prime is 156138333787. The reversal of 156138333768 is 867333831651.

156138333768 is a `hidden beast` number, since 1 + 561 + 3 + 8 + 3 + 3 + 3 + 76 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 27112256964 + 129026076804 = 164658^2 + 359202^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1202346 + ... + 1325862.

Almost surely, 2^156138333768 is an apocalyptic number.

156138333768 is a gapful number since it is divisible by the number (18) 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 156138333768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214799037180).

156138333768 is an abundant number, since it is smaller than the sum of its proper divisors (273459740592).

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

156138333768 is a wasteful number, since it uses less digits than its factorization.

156138333768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123807 (or 123800 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 156138333768 in words is "one hundred fifty-six billion, one hundred thirty-eight million, three hundred thirty-three thousand, seven hundred sixty-eight".