20435070158 has 4 divisors (see below), whose sum is σ = 30652605240. Its totient is φ = 10217535078.

The previous prime is 20435070157. The next prime is 20435070163. The reversal of 20435070158 is 85107053402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20435070157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5108767538 + ... + 5108767541.

It is an arithmetic number, because the mean of its divisors is an integer number (7663151310).

Almost surely, 2^20435070158 is an apocalyptic number.

20435070158 is a deficient number, since it is larger than the sum of its proper divisors (10217535082).

20435070158 is a wasteful number, since it uses less digits than its factorization.

20435070158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10217535081.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 20435070158 in words is "twenty billion, four hundred thirty-five million, seventy thousand, one hundred fifty-eight".