51771061115 has 4 divisors (see below), whose sum is σ = 62125273344. Its totient is φ = 41416848888.

The previous prime is 51771061081. The next prime is 51771061141. The reversal of 51771061115 is 51116017715.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51771061115 - 2¹⁰ = 51771060091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5177106107 + ... + 5177106116.

It is an arithmetic number, because the mean of its divisors is an integer number (15531318336).

Almost surely, 2^51771061115 is an apocalyptic number.

51771061115 is a deficient number, since it is larger than the sum of its proper divisors (10354212229).

51771061115 is a wasteful number, since it uses less digits than its factorization.

51771061115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10354212228.

The product of its (nonzero) digits is 7350, while the sum is 35.

The spelling of 51771061115 in words is "fifty-one billion, seven hundred seventy-one million, sixty-one thousand, one hundred fifteen".