15000000051 has 8 divisors (see below), whose sum is σ = 20338983360. Its totient is φ = 9830508392.

The previous prime is 15000000047. The next prime is 15000000077.

15000000051 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 15000000051 - 2² = 15000000047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14999999973 and 15000000036.

It is not an unprimeable number, because it can be changed into a prime (15000000251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42372705 + ... + 42373058.

It is an arithmetic number, because the mean of its divisors is an integer number (2542372920).

Almost surely, 2^15000000051 is an apocalyptic number.

15000000051 is a deficient number, since it is larger than the sum of its proper divisors (5338983309).

15000000051 is an equidigital number, since it uses as much as digits as its factorization.

15000000051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84745825.

The product of its (nonzero) digits is 25, while the sum is 12.

It can be divided in two parts, 150000000 and 51, that added together give a palindrome (150000051).

The spelling of 15000000051 in words is "fifteen billion, fifty-one", and thus it is an aban number and an uban number.