815181017345 has 8 divisors (see below), whose sum is σ = 990599717760. Its totient is φ = 643889815920.

The previous prime is 815181017293. The next prime is 815181017351. The reversal of 815181017345 is 543710181518.

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

It is not a de Polignac number, because 815181017345 - 2¹⁴ = 815181000961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 815181017296 and 815181017305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1031874311 + ... + 1031875100.

It is an arithmetic number, because the mean of its divisors is an integer number (123824964720).

Almost surely, 2^815181017345 is an apocalyptic number.

It is an amenable number.

815181017345 is a deficient number, since it is larger than the sum of its proper divisors (175418700415).

815181017345 is a wasteful number, since it uses less digits than its factorization.

815181017345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063749495.

The product of its (nonzero) digits is 134400, while the sum is 44.

The spelling of 815181017345 in words is "eight hundred fifteen billion, one hundred eighty-one million, seventeen thousand, three hundred forty-five".