15312512145551 has 8 divisors (see below), whose sum is σ = 15409808672544. Its totient is φ = 15215485512960.

The previous prime is 15312512145457. The next prime is 15312512145569. The reversal of 15312512145551 is 15554121521351.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15312512145551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15312512145499 and 15312512145508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15312512145251) 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, 67359770 + ... + 67586711.

It is an arithmetic number, because the mean of its divisors is an integer number (1926226084068).

Almost surely, 2^{15312512145551} is an apocalyptic number.

15312512145551 is a deficient number, since it is larger than the sum of its proper divisors (97296526993).

15312512145551 is a wasteful number, since it uses less digits than its factorization.

15312512145551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134947201.

The product of its digits is 150000, while the sum is 41.

The spelling of 15312512145551 in words is "fifteen trillion, three hundred twelve billion, five hundred twelve million, one hundred forty-five thousand, five hundred fifty-one".