51071428715 has 8 divisors (see below), whose sum is σ = 61287051168. Its totient is φ = 40856251840.

The previous prime is 51071428711. The next prime is 51071428763. The reversal of 51071428715 is 51782417015.

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

It is not a de Polignac number, because 51071428715 - 2² = 51071428711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51071428711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243650 + ... + 401880.

It is an arithmetic number, because the mean of its divisors is an integer number (7660881396).

Almost surely, 2^51071428715 is an apocalyptic number.

51071428715 is a deficient number, since it is larger than the sum of its proper divisors (10215622453).

51071428715 is a wasteful number, since it uses less digits than its factorization.

51071428715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222789.

The product of its (nonzero) digits is 78400, while the sum is 41.

The spelling of 51071428715 in words is "fifty-one billion, seventy-one million, four hundred twenty-eight thousand, seven hundred fifteen".