51061115221630 has 16 divisors (see below), whose sum is σ = 91924594087104. Its totient is φ = 20421204602400.

The previous prime is 51061115221601. The next prime is 51061115221693. The reversal of 51061115221630 is 3612251116015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405119622 + ... + 405245641.

It is an arithmetic number, because the mean of its divisors is an integer number (5745287130444).

Almost surely, 2^{51061115221630} is an apocalyptic number.

51061115221630 is a deficient number, since it is larger than the sum of its proper divisors (40863478865474).

51061115221630 is a wasteful number, since it uses less digits than its factorization.

51061115221630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810371571.

The product of its (nonzero) digits is 10800, while the sum is 34.

Adding to 51061115221630 its reverse (3612251116015), we get a palindrome (54673366337645).

The spelling of 51061115221630 in words is "fifty-one trillion, sixty-one billion, one hundred fifteen million, two hundred twenty-one thousand, six hundred thirty".