51342011512 has 64 divisors (see below), whose sum is σ = 105924931200. Its totient is φ = 23136048000.

The previous prime is 51342011477. The next prime is 51342011519. The reversal of 51342011512 is 21511024315.

It is a super-2 number, since 2×51342011512² (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 (51342011519) 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, 17647914 + ... + 17650822.

It is an arithmetic number, because the mean of its divisors is an integer number (1655077050).

Almost surely, 2^51342011512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51342011512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52962465600).

51342011512 is an abundant number, since it is smaller than the sum of its proper divisors (54582919688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51342011512 is a wasteful number, since it uses less digits than its factorization.

51342011512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4588 (or 4584 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 51342011512 its reverse (21511024315), we get a palindrome (72853035827).

The spelling of 51342011512 in words is "fifty-one billion, three hundred forty-two million, eleven thousand, five hundred twelve".