51919021611219 has 128 divisors (see below), whose sum is σ = 86550047948800. Its totient is φ = 27014926947840.

The previous prime is 51919021611217. The next prime is 51919021611241. The reversal of 51919021611219 is 91211612091915.

It is not a de Polignac number, because 51919021611219 - 2¹ = 51919021611217 is a prime.

It is a super-2 number, since 2×51919021611219² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51919021611217) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6188936277 + ... + 6188944665.

It is an arithmetic number, because the mean of its divisors is an integer number (676172249600).

Almost surely, 2^{51919021611219} is an apocalyptic number.

51919021611219 is a deficient number, since it is larger than the sum of its proper divisors (34631026337581).

51919021611219 is a wasteful number, since it uses less digits than its factorization.

51919021611219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11793.

The product of its (nonzero) digits is 87480, while the sum is 48.

The spelling of 51919021611219 in words is "fifty-one trillion, nine hundred nineteen billion, twenty-one million, six hundred eleven thousand, two hundred nineteen".