20150817283 has 4 divisors (see below), whose sum is σ = 20162274880. Its totient is φ = 20139359688.

The previous prime is 20150817263. The next prime is 20150817307. The reversal of 20150817283 is 38271805102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20150817283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20150817223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5726160 + ... + 5729677.

It is an arithmetic number, because the mean of its divisors is an integer number (5040568720).

Almost surely, 2^20150817283 is an apocalyptic number.

20150817283 is a deficient number, since it is larger than the sum of its proper divisors (11457597).

20150817283 is a wasteful number, since it uses less digits than its factorization.

20150817283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11457596.

The product of its (nonzero) digits is 26880, while the sum is 37.

It can be divided in two parts, 201508 and 17283, that added together give a triangular number (218791 = T₆₆₁).

The spelling of 20150817283 in words is "twenty billion, one hundred fifty million, eight hundred seventeen thousand, two hundred eighty-three".