51612512667 has 8 divisors (see below), whose sum is σ = 68818036224. Its totient is φ = 34407665448.

The previous prime is 51612512659. The next prime is 51612512687. The reversal of 51612512667 is 76621521615.

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

It is not a de Polignac number, because 51612512667 - 2³ = 51612512659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51612512687) 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, 49258 + ... + 325040.

It is an arithmetic number, because the mean of its divisors is an integer number (8602254528).

Almost surely, 2^51612512667 is an apocalyptic number.

51612512667 is a deficient number, since it is larger than the sum of its proper divisors (17205523557).

51612512667 is a wasteful number, since it uses less digits than its factorization.

51612512667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338169.

The product of its digits is 151200, while the sum is 42.

The spelling of 51612512667 in words is "fifty-one billion, six hundred twelve million, five hundred twelve thousand, six hundred sixty-seven".