205310122027157 has 8 divisors (see below), whose sum is σ = 244841884653696. Its totient is φ = 168328795699152.

The previous prime is 205310122027151. The next prime is 205310122027189. The reversal of 205310122027157 is 751720221013502.

It is a happy number.

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 205310122027157 - 2⁶ = 205310122027093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205310122027157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205310122027151) 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, 637609074458 + ... + 637609074779.

It is an arithmetic number, because the mean of its divisors is an integer number (30605235581712).

Almost surely, 2^{205310122027157} is an apocalyptic number.

It is an amenable number.

205310122027157 is a deficient number, since it is larger than the sum of its proper divisors (39531762626539).

205310122027157 is a wasteful number, since it uses less digits than its factorization.

205310122027157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275218149267.

The product of its (nonzero) digits is 58800, while the sum is 38.

The spelling of 205310122027157 in words is "two hundred five trillion, three hundred ten billion, one hundred twenty-two million, twenty-seven thousand, one hundred fifty-seven".