816699674001 has 4 divisors (see below), whose sum is σ = 1088932898672. Its totient is φ = 544466449332.

The previous prime is 816699673987. The next prime is 816699674009. The reversal of 816699674001 is 100476996618.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 816699674001 - 2¹⁹ = 816699149713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (816699674009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136116612331 + ... + 136116612336.

It is an arithmetic number, because the mean of its divisors is an integer number (272233224668).

Almost surely, 2^816699674001 is an apocalyptic number.

It is an amenable number.

816699674001 is a deficient number, since it is larger than the sum of its proper divisors (272233224671).

816699674001 is a wasteful number, since it uses less digits than its factorization.

816699674001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272233224670.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 816699674001 in words is "eight hundred sixteen billion, six hundred ninety-nine million, six hundred seventy-four thousand, one".