156868247040 has 320 divisors, whose sum is σ = 515245522176. Its totient is φ = 40699625472.

The previous prime is 156868247021. The next prime is 156868247069. The reversal of 156868247040 is 40742868651.

It is a tau number, because it is divible by the number of its divisors (320).

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, 42706644 + ... + 42710316.

Almost surely, 2^156868247040 is an apocalyptic number.

156868247040 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 156868247040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257622761088).

156868247040 is an abundant number, since it is smaller than the sum of its proper divisors (358377275136).

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

156868247040 is an equidigital number, since it uses as much as digits as its factorization.

156868247040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849 (or 3833 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 156868247040 in words is "one hundred fifty-six billion, eight hundred sixty-eight million, two hundred forty-seven thousand, forty".