521106161055 has 16 divisors (see below), whose sum is σ = 834330599424. Its totient is φ = 277736372000.

The previous prime is 521106161027. The next prime is 521106161077. The reversal of 521106161055 is 550161601125.

It is not a de Polignac number, because 521106161055 - 2⁹ = 521106160543 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11659071 + ... + 11703680.

It is an arithmetic number, because the mean of its divisors is an integer number (52145662464).

Almost surely, 2^521106161055 is an apocalyptic number.

521106161055 is a deficient number, since it is larger than the sum of its proper divisors (313224438369).

521106161055 is a wasteful number, since it uses less digits than its factorization.

521106161055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23364246.

The product of its (nonzero) digits is 9000, while the sum is 33.

The spelling of 521106161055 in words is "five hundred twenty-one billion, one hundred six million, one hundred sixty-one thousand, fifty-five".