51974079919 has 8 divisors (see below), whose sum is σ = 53450038400. Its totient is φ = 50510269656.

The previous prime is 51974079847. The next prime is 51974079973. The reversal of 51974079919 is 91997047915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51974079919 - 2⁹ = 51974079407 is a prime.

It is a super-2 number, since 2×51974079919² (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 (51974079019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3028377 + ... + 3045490.

It is an arithmetic number, because the mean of its divisors is an integer number (6681254800).

Almost surely, 2^51974079919 is an apocalyptic number.

51974079919 is a deficient number, since it is larger than the sum of its proper divisors (1475958481).

51974079919 is a wasteful number, since it uses less digits than its factorization.

51974079919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6074109.

The product of its (nonzero) digits is 6429780, while the sum is 61.

The spelling of 51974079919 in words is "fifty-one billion, nine hundred seventy-four million, seventy-nine thousand, nine hundred nineteen".