51020443101 has 16 divisors (see below), whose sum is σ = 71613158400. Its totient is φ = 32220954288.

The previous prime is 51020443099. The next prime is 51020443109. The reversal of 51020443101 is 10134402015.

It is not a de Polignac number, because 51020443101 - 2¹ = 51020443099 is a prime.

It is a super-2 number, since 2×51020443101² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51020443109) 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, 961810 + ... + 1013468.

It is an arithmetic number, because the mean of its divisors is an integer number (4475822400).

Almost surely, 2^51020443101 is an apocalyptic number.

It is an amenable number.

51020443101 is a deficient number, since it is larger than the sum of its proper divisors (20592715299).

51020443101 is a wasteful number, since it uses less digits than its factorization.

51020443101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69008.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 51020443101 its reverse (10134402015), we get a palindrome (61154845116).

The spelling of 51020443101 in words is "fifty-one billion, twenty million, four hundred forty-three thousand, one hundred one".