51010020206111 has 16 divisors (see below), whose sum is σ = 52779237765408. Its totient is φ = 49268537808000.

The previous prime is 51010020206107. The next prime is 51010020206129. The reversal of 51010020206111 is 11160202001015.

It is a cyclic number.

It is not a de Polignac number, because 51010020206111 - 2² = 51010020206107 is a prime.

It is a super-2 number, since 2×51010020206111² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51010020206711) 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, 3907100 + ... + 10829841.

It is an arithmetic number, because the mean of its divisors is an integer number (3298702360338).

Almost surely, 2^{51010020206111} is an apocalyptic number.

51010020206111 is a deficient number, since it is larger than the sum of its proper divisors (1769217559297).

51010020206111 is a wasteful number, since it uses less digits than its factorization.

51010020206111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14737882.

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 51010020206111 its reverse (11160202001015), we get a palindrome (62170222207126).

The spelling of 51010020206111 in words is "fifty-one trillion, ten billion, twenty million, two hundred six thousand, one hundred eleven".