156834693540 has 144 divisors (see below), whose sum is σ = 543861077760. Its totient is φ = 35836888320.

The previous prime is 156834693539. The next prime is 156834693571. The reversal of 156834693540 is 45396438651.

156834693540 is a `hidden beast` number, since 1 + 5 + 6 + 8 + 3 + 4 + 6 + 93 + 540 = 666.

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, 4494681 + ... + 4529439.

It is an arithmetic number, because the mean of its divisors is an integer number (3776813040).

Almost surely, 2^156834693540 is an apocalyptic number.

156834693540 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 156834693540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271930538880).

156834693540 is an abundant number, since it is smaller than the sum of its proper divisors (387026384220).

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

156834693540 is a wasteful number, since it uses less digits than its factorization.

156834693540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38362 (or 38357 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 156834693540 in words is "one hundred fifty-six billion, eight hundred thirty-four million, six hundred ninety-three thousand, five hundred forty".