158056890505 has 8 divisors (see below), whose sum is σ = 189670685832. Its totient is φ = 126443900928.

The previous prime is 158056890503. The next prime is 158056890529. The reversal of 158056890505 is 505098650851.

It can be written as a sum of positive squares in 4 ways, for example, as 10690732816 + 147366157689 = 103396^2 + 383883^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 158056890505 - 2¹ = 158056890503 is a prime.

It is a super-2 number, since 2×158056890505² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158056890503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385707 + ... + 681823.

It is an arithmetic number, because the mean of its divisors is an integer number (23708835729).

Almost surely, 2^158056890505 is an apocalyptic number.

It is an amenable number.

158056890505 is a deficient number, since it is larger than the sum of its proper divisors (31613795327).

158056890505 is a wasteful number, since it uses less digits than its factorization.

158056890505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402875.

The product of its (nonzero) digits is 2160000, while the sum is 52.

The spelling of 158056890505 in words is "one hundred fifty-eight billion, fifty-six million, eight hundred ninety thousand, five hundred five".