51119864385 has 16 divisors (see below), whose sum is σ = 81895730496. Its totient is φ = 27229278528.

The previous prime is 51119864351. The next prime is 51119864431. The reversal of 51119864385 is 58346891115.

It is not a de Polignac number, because 51119864385 - 2⁶ = 51119864321 is a prime.

It is a super-2 number, since 2×51119864385² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2153374 + ... + 2176983.

It is an arithmetic number, because the mean of its divisors is an integer number (5118483156).

Almost surely, 2^51119864385 is an apocalyptic number.

It is an amenable number.

51119864385 is a deficient number, since it is larger than the sum of its proper divisors (30775866111).

51119864385 is a wasteful number, since it uses less digits than its factorization.

51119864385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4331152.

The product of its digits is 1036800, while the sum is 51.

The spelling of 51119864385 in words is "fifty-one billion, one hundred nineteen million, eight hundred sixty-four thousand, three hundred eighty-five".