51177117085 has 8 divisors (see below), whose sum is σ = 61683081696. Its totient is φ = 40761332880.

The previous prime is 51177117077. The next prime is 51177117091. The reversal of 51177117085 is 58071177115.

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

It is not a de Polignac number, because 51177117085 - 2³ = 51177117077 is a prime.

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, 22543851 + ... + 22546120.

It is an arithmetic number, because the mean of its divisors is an integer number (7710385212).

Almost surely, 2^51177117085 is an apocalyptic number.

It is an amenable number.

51177117085 is a deficient number, since it is larger than the sum of its proper divisors (10505964611).

51177117085 is a wasteful number, since it uses less digits than its factorization.

51177117085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45090203.

The product of its (nonzero) digits is 68600, while the sum is 43.

The spelling of 51177117085 in words is "fifty-one billion, one hundred seventy-seven million, one hundred seventeen thousand, eighty-five".