810624810122 has 4 divisors (see below), whose sum is σ = 1215937215186. Its totient is φ = 405312405060.

The previous prime is 810624810089. The next prime is 810624810181. The reversal of 810624810122 is 221018426018.

810624810122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 798465557761 + 12159252361 = 893569^2 + 110269^2 .

It is a super-2 number, since 2×810624810122² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202656202529 + ... + 202656202532.

Almost surely, 2^810624810122 is an apocalyptic number.

810624810122 is a deficient number, since it is larger than the sum of its proper divisors (405312405064).

810624810122 is a wasteful number, since it uses less digits than its factorization.

810624810122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405312405063.

The product of its (nonzero) digits is 12288, while the sum is 35.

The spelling of 810624810122 in words is "eight hundred ten billion, six hundred twenty-four million, eight hundred ten thousand, one hundred twenty-two".