51000100006651 has 12 divisors (see below), whose sum is σ = 53160349962600. Its totient is φ = 48912869692160.

The previous prime is 51000100006579. The next prime is 51000100006729. The reversal of 51000100006651 is 15660000100015.

It is not a de Polignac number, because 51000100006651 - 2²⁹ = 50999563135739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51000100006451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 257012206 + ... + 257210563.

It is an arithmetic number, because the mean of its divisors is an integer number (4430029163550).

Almost surely, 2^{51000100006651} is an apocalyptic number.

51000100006651 is a deficient number, since it is larger than the sum of its proper divisors (2160249955949).

51000100006651 is an equidigital number, since it uses as much as digits as its factorization.

51000100006651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514222910 (or 514222869 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 51000100006651 its reverse (15660000100015), we get a palindrome (66660100106666).

The spelling of 51000100006651 in words is "fifty-one trillion, one hundred million, six thousand, six hundred fifty-one".