51752276721780 has 48 divisors (see below), whose sum is σ = 144959011089984. Its totient is φ = 13795594147840.

The previous prime is 51752276721749. The next prime is 51752276721781. The reversal of 51752276721780 is 8712767225715.

It is a super-3 number, since 3×51752276721780³ (a number of 42 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51752276721781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156489006 + ... + 156819365.

It is an arithmetic number, because the mean of its divisors is an integer number (3019979397708).

Almost surely, 2^{51752276721780} is an apocalyptic number.

It is an amenable number.

51752276721780 is an abundant number, since it is smaller than the sum of its proper divisors (93206734368204).

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

51752276721780 is a wasteful number, since it uses less digits than its factorization.

51752276721780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313311136 (or 313311134 counting only the distinct ones).

The product of its (nonzero) digits is 23049600, while the sum is 60.

The spelling of 51752276721780 in words is "fifty-one trillion, seven hundred fifty-two billion, two hundred seventy-six million, seven hundred twenty-one thousand, seven hundred eighty".