50721701115280 has 40 divisors (see below), whose sum is σ = 126999336256632. Its totient is φ = 18728012719104.

The previous prime is 50721701115277. The next prime is 50721701115287. The reversal of 50721701115280 is 8251110712705.

It can be written as a sum of positive squares in 4 ways, for example, as 122208973056 + 50599492142224 = 349584^2 + 7113332^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (50721701115287) 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, 24385432189 + ... + 24385434268.

Almost surely, 2^{50721701115280} is an apocalyptic number.

It is an amenable number.

50721701115280 is an abundant number, since it is smaller than the sum of its proper divisors (76277635141352).

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

50721701115280 is a wasteful number, since it uses less digits than its factorization.

50721701115280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48770866483 (or 48770866477 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 40.

Adding to 50721701115280 its reverse (8251110712705), we get a palindrome (58972811827985).

The spelling of 50721701115280 in words is "fifty trillion, seven hundred twenty-one billion, seven hundred one million, one hundred fifteen thousand, two hundred eighty".