51120728460514 has 4 divisors (see below), whose sum is σ = 76681092690774. Its totient is φ = 25560364230256.

The previous prime is 51120728460511. The next prime is 51120728460539. The reversal of 51120728460514 is 41506482702115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 32967888282289 + 18152840178225 = 5741767^2 + 4260615^2 .

It is a super-2 number, since 2×51120728460514² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51120728460511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12780182115127 + ... + 12780182115130.

Almost surely, 2^{51120728460514} is an apocalyptic number.

51120728460514 is a deficient number, since it is larger than the sum of its proper divisors (25560364230260).

51120728460514 is a wasteful number, since it uses less digits than its factorization.

51120728460514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25560364230259.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 51120728460514 in words is "fifty-one trillion, one hundred twenty billion, seven hundred twenty-eight million, four hundred sixty thousand, five hundred fourteen".