51420434352 has 80 divisors (see below), whose sum is σ = 151838472192. Its totient is φ = 14689059840.

The previous prime is 51420434333. The next prime is 51420434389. The reversal of 51420434352 is 25343402415.

It is a super-2 number, since 2×51420434352² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3029313 + ... + 3046239.

Almost surely, 2^51420434352 is an apocalyptic number.

It is an amenable number.

51420434352 is an abundant number, since it is smaller than the sum of its proper divisors (100418037840).

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

51420434352 is a wasteful number, since it uses less digits than its factorization.

51420434352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25986 (or 25980 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 51420434352 its reverse (25343402415), we get a palindrome (76763836767).

The spelling of 51420434352 in words is "fifty-one billion, four hundred twenty million, four hundred thirty-four thousand, three hundred fifty-two".