158520680640 has 1344 divisors, whose sum is σ = 704239570944. Its totient is φ = 33108590592.

The previous prime is 158520680611. The next prime is 158520680713. The reversal of 158520680640 is 46086025851.

158520680640 is a `hidden beast` number, since 1 + 5 + 8 + 520 + 6 + 80 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 342377049 + ... + 342377511.

It is an arithmetic number, because the mean of its divisors is an integer number (523987776).

Almost surely, 2^158520680640 is an apocalyptic number.

158520680640 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 158520680640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352119785472).

158520680640 is an abundant number, since it is smaller than the sum of its proper divisors (545718890304).

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

158520680640 is a wasteful number, since it uses less digits than its factorization.

158520680640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

It can be divided in two parts, 158520 and 680640, that added together give a triangular number (839160 = T₁₂₉₅).

The spelling of 158520680640 in words is "one hundred fifty-eight billion, five hundred twenty million, six hundred eighty thousand, six hundred forty".