51654122119 has 4 divisors (see below), whose sum is σ = 51677571496. Its totient is φ = 51630672744.

The previous prime is 51654122101. The next prime is 51654122123. The reversal of 51654122119 is 91122145615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91122145615 = 5 ⋅18224429123.

It is a cyclic number.

It is not a de Polignac number, because 51654122119 - 2⁵ = 51654122087 is a prime.

It is a super-2 number, since 2×51654122119² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51654122159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11721384 + ... + 11725789.

It is an arithmetic number, because the mean of its divisors is an integer number (12919392874).

Almost surely, 2^51654122119 is an apocalyptic number.

51654122119 is a deficient number, since it is larger than the sum of its proper divisors (23449377).

51654122119 is a wasteful number, since it uses less digits than its factorization.

51654122119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23449376.

The product of its digits is 21600, while the sum is 37.

The spelling of 51654122119 in words is "fifty-one billion, six hundred fifty-four million, one hundred twenty-two thousand, one hundred nineteen".