51486072519 has 64 divisors (see below), whose sum is σ = 84151296000. Its totient is φ = 27367441920.

The previous prime is 51486072467. The next prime is 51486072563. The reversal of 51486072519 is 91527068415.

It is a happy number.

It is not a de Polignac number, because 51486072519 - 2¹² = 51486068423 is a prime.

It is a super-2 number, since 2×51486072519² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51486472519) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4317337 + ... + 4329245.

It is an arithmetic number, because the mean of its divisors is an integer number (1314864000).

Almost surely, 2^51486072519 is an apocalyptic number.

51486072519 is a deficient number, since it is larger than the sum of its proper divisors (32665223481).

51486072519 is a wasteful number, since it uses less digits than its factorization.

51486072519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12208.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 51486072519 in words is "fifty-one billion, four hundred eighty-six million, seventy-two thousand, five hundred nineteen".