158539457664 has 144 divisors (see below), whose sum is σ = 530697879270. Its totient is φ = 45296971776.

The previous prime is 158539457653. The next prime is 158539457693. The reversal of 158539457664 is 466754935851.

It is a happy number.

158539457664 is a `hidden beast` number, since 1 + 5 + 8 + 53 + 9 + 4 + 576 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 137225793600 + 21313664064 = 370440^2 + 145992^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (63).

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 17 ways as a sum of consecutive naturals, for example, 1347849 + ... + 1460744.

Almost surely, 2^158539457664 is an apocalyptic number.

158539457664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

158539457664 is an abundant number, since it is smaller than the sum of its proper divisors (372158421606).

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

158539457664 is a wasteful number, since it uses less digits than its factorization.

158539457664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808627 (or 2808605 counting only the distinct ones).

The product of its digits is 108864000, while the sum is 63.

The spelling of 158539457664 in words is "one hundred fifty-eight billion, five hundred thirty-nine million, four hundred fifty-seven thousand, six hundred sixty-four".