51067222752 has 192 divisors, whose sum is σ = 166976570880. Its totient is φ = 13305821184.

The previous prime is 51067222729. The next prime is 51067222763. The reversal of 51067222752 is 25722276015.

It is a super-2 number, since 2×51067222752² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 51067222752.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 689874 + ... + 760302.

It is an arithmetic number, because the mean of its divisors is an integer number (869669640).

Almost surely, 2^51067222752 is an apocalyptic number.

51067222752 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51067222752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83488285440).

51067222752 is an abundant number, since it is smaller than the sum of its proper divisors (115909348128).

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

51067222752 is a wasteful number, since it uses less digits than its factorization.

51067222752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70545 (or 70537 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 39.

Adding to 51067222752 its reverse (25722276015), we get a palindrome (76789498767).

The spelling of 51067222752 in words is "fifty-one billion, sixty-seven million, two hundred twenty-two thousand, seven hundred fifty-two".