51007545085 has 16 divisors (see below), whose sum is σ = 72365385600. Its totient is φ = 33770511936.

The previous prime is 51007545079. The next prime is 51007545091. The reversal of 51007545085 is 58054570015.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51007545079) and next prime (51007545091).

It is not a de Polignac number, because 51007545085 - 2³ = 51007545077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25125855 + ... + 25127884.

It is an arithmetic number, because the mean of its divisors is an integer number (4522836600).

Almost surely, 2^51007545085 is an apocalyptic number.

It is an amenable number.

51007545085 is a deficient number, since it is larger than the sum of its proper divisors (21357840515).

51007545085 is a wasteful number, since it uses less digits than its factorization.

51007545085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50253780.

The product of its (nonzero) digits is 140000, while the sum is 40.

The spelling of 51007545085 in words is "fifty-one billion, seven million, five hundred forty-five thousand, eighty-five".