158405805645 has 16 divisors (see below), whose sum is σ = 253458175680. Its totient is φ = 84480134144.

The previous prime is 158405805631. The next prime is 158405805653. The reversal of 158405805645 is 546508504851.

It is a cyclic number.

It is not a de Polignac number, because 158405805645 - 2¹⁰ = 158405804621 is a prime.

It is a super-3 number, since 3×158405805645³ (a number of 35 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297517 + ... + 636653.

It is an arithmetic number, because the mean of its divisors is an integer number (15841135980).

Almost surely, 2^158405805645 is an apocalyptic number.

158405805645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

158405805645 is a deficient number, since it is larger than the sum of its proper divisors (95052370035).

158405805645 is a wasteful number, since it uses less digits than its factorization.

158405805645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370284.

The product of its (nonzero) digits is 3840000, while the sum is 51.

The spelling of 158405805645 in words is "one hundred fifty-eight billion, four hundred five million, eight hundred five thousand, six hundred forty-five".