51121700605 has 8 divisors (see below), whose sum is σ = 64013260032. Its totient is φ = 39119214288.

The previous prime is 51121700587. The next prime is 51121700633. The reversal of 51121700605 is 50600712115.

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 51121700605 - 2²¹ = 51119603453 is a prime.

It is a super-2 number, since 2×51121700605² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222268149 + ... + 222268378.

It is an arithmetic number, because the mean of its divisors is an integer number (8001657504).

Almost surely, 2^51121700605 is an apocalyptic number.

It is an amenable number.

51121700605 is a deficient number, since it is larger than the sum of its proper divisors (12891559427).

51121700605 is a wasteful number, since it uses less digits than its factorization.

51121700605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444536555.

The product of its (nonzero) digits is 2100, while the sum is 28.

The spelling of 51121700605 in words is "fifty-one billion, one hundred twenty-one million, seven hundred thousand, six hundred five".