51121335535 has 8 divisors (see below), whose sum is σ = 61503305760. Its totient is φ = 40791933024.

The previous prime is 51121335449. The next prime is 51121335569. The reversal of 51121335535 is 53553312115.

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 51121335535 - 2¹⁵ = 51121302767 is a prime.

It is a super-2 number, since 2×51121335535² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51121335535.

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, 13139787 + ... + 13143676.

It is an arithmetic number, because the mean of its divisors is an integer number (7687913220).

Almost surely, 2^51121335535 is an apocalyptic number.

51121335535 is a deficient number, since it is larger than the sum of its proper divisors (10381970225).

51121335535 is a wasteful number, since it uses less digits than its factorization.

51121335535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26283857.

The product of its digits is 33750, while the sum is 34.

The spelling of 51121335535 in words is "fifty-one billion, one hundred twenty-one million, three hundred thirty-five thousand, five hundred thirty-five".