51011346512 has 60 divisors (see below), whose sum is σ = 117644541696. Its totient is φ = 21353572800.

The previous prime is 51011346511. The next prime is 51011346541. The reversal of 51011346512 is 21564311015.

It is a super-2 number, since 2×51011346512² (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 (51011346511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 722864 + ... + 790287.

Almost surely, 2^51011346512 is an apocalyptic number.

It is an amenable number.

51011346512 is an abundant number, since it is smaller than the sum of its proper divisors (66633195184).

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

51011346512 is a wasteful number, since it uses less digits than its factorization.

51011346512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513216 (or 1513203 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 51011346512 its reverse (21564311015), we get a palindrome (72575657527).

The spelling of 51011346512 in words is "fifty-one billion, eleven million, three hundred forty-six thousand, five hundred twelve".