978251036663315 has 8 divisors (see below), whose sum is σ = 1173921231429648. Its totient is φ = 782587504374880.

The previous prime is 978251036663311. The next prime is 978251036663323. The reversal of 978251036663315 is 513366630152879.

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

It is not a de Polignac number, because 978251036663315 - 2² = 978251036663311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978251036663311) 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, 1665296441 + ... + 1665883770.

It is an arithmetic number, because the mean of its divisors is an integer number (146740153928706).

Almost surely, 2^{978251036663315} is an apocalyptic number.

978251036663315 is a deficient number, since it is larger than the sum of its proper divisors (195670194766333).

978251036663315 is a wasteful number, since it uses less digits than its factorization.

978251036663315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331238949.

The product of its (nonzero) digits is 146966400, while the sum is 65.

The spelling of 978251036663315 in words is "nine hundred seventy-eight trillion, two hundred fifty-one billion, thirty-six million, six hundred sixty-three thousand, three hundred fifteen".