51344938728528 has 40 divisors (see below), whose sum is σ = 132641389032768. Its totient is φ = 17114941212672.

The previous prime is 51344938728521. The next prime is 51344938728547. The reversal of 51344938728528 is 82582783944315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51344938728521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27541125 + ... + 29346267.

Almost surely, 2^{51344938728528} is an apocalyptic number.

It is an amenable number.

51344938728528 is an abundant number, since it is smaller than the sum of its proper divisors (81296450304240).

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

51344938728528 is a wasteful number, since it uses less digits than its factorization.

51344938728528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397731 (or 2397725 counting only the distinct ones).

The product of its digits is 464486400, while the sum is 69.

The spelling of 51344938728528 in words is "fifty-one trillion, three hundred forty-four billion, nine hundred thirty-eight million, seven hundred twenty-eight thousand, five hundred twenty-eight".