51514222440 has 64 divisors (see below), whose sum is σ = 156659716800. Its totient is φ = 13548943872.

The previous prime is 51514222411. The next prime is 51514222447. The reversal of 51514222440 is 4422241515.

It is a super-2 number, since 2×51514222440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 51514222398 and 51514222407.

It is not an unprimeable number, because it can be changed into a prime (51514222447) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2931550 + ... + 2949069.

It is an arithmetic number, because the mean of its divisors is an integer number (2447808075).

Almost surely, 2^51514222440 is an apocalyptic number.

It is an amenable number.

51514222440 is an abundant number, since it is smaller than the sum of its proper divisors (105145494360).

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

51514222440 is a wasteful number, since it uses less digits than its factorization.

51514222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5880706 (or 5880702 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 51514222440 its reverse (4422241515), we get a palindrome (55936463955).

The spelling of 51514222440 in words is "fifty-one billion, five hundred fourteen million, two hundred twenty-two thousand, four hundred forty".