51025206215 has 8 divisors (see below), whose sum is σ = 61231871808. Its totient is φ = 40819082080.

The previous prime is 51025206209. The next prime is 51025206241. The reversal of 51025206215 is 51260252015.

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

It is not a de Polignac number, because 51025206215 - 2¹⁶ = 51025140679 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, 113585 + ... + 339045.

It is an arithmetic number, because the mean of its divisors is an integer number (7653983976).

Almost surely, 2^51025206215 is an apocalyptic number.

51025206215 is a deficient number, since it is larger than the sum of its proper divisors (10206665593).

51025206215 is a wasteful number, since it uses less digits than its factorization.

51025206215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270729.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 51025206215 in words is "fifty-one billion, twenty-five million, two hundred six thousand, two hundred fifteen".