259805528157 has 16 divisors (see below), whose sum is σ = 395919581312. Its totient is φ = 148450760640.

The previous prime is 259805528149. The next prime is 259805528189. The reversal of 259805528157 is 751825508952.

It is a happy number.

It is not a de Polignac number, because 259805528157 - 2³ = 259805528149 is a prime.

It is a super-3 number, since 3×259805528157³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 259805528097 and 259805528106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259805528137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56194 + ... + 723027.

It is an arithmetic number, because the mean of its divisors is an integer number (24744973832).

Almost surely, 2^259805528157 is an apocalyptic number.

It is an amenable number.

259805528157 is a deficient number, since it is larger than the sum of its proper divisors (136114053155).

259805528157 is a wasteful number, since it uses less digits than its factorization.

259805528157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795108.

The product of its (nonzero) digits is 10080000, while the sum is 57.

The spelling of 259805528157 in words is "two hundred fifty-nine billion, eight hundred five million, five hundred twenty-eight thousand, one hundred fifty-seven".