51213450011 has 12 divisors (see below), whose sum is σ = 54625045608. Its totient is φ = 47848764672.

The previous prime is 51213450007. The next prime is 51213450023. The reversal of 51213450011 is 11005431215.

It is not a de Polignac number, because 51213450011 - 2² = 51213450007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51213450091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238820 + ... + 399326.

It is an arithmetic number, because the mean of its divisors is an integer number (4552087134).

Almost surely, 2^51213450011 is an apocalyptic number.

51213450011 is a deficient number, since it is larger than the sum of its proper divisors (3411595597).

51213450011 is a wasteful number, since it uses less digits than its factorization.

51213450011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160798 (or 160661 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 51213450011 its reverse (11005431215), we get a palindrome (62218881226).

The spelling of 51213450011 in words is "fifty-one billion, two hundred thirteen million, four hundred fifty thousand, eleven".