994064637599 has 32 divisors (see below), whose sum is σ = 1192508308800. Its totient is φ = 818250301440.

The previous prime is 994064637589. The next prime is 994064637611. The reversal of 994064637599 is 995736460499.

It is not a de Polignac number, because 994064637599 - 2²⁰ = 994063589023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994064637509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191354 + ... + 1422935.

It is an arithmetic number, because the mean of its divisors is an integer number (37265884650).

Almost surely, 2^994064637599 is an apocalyptic number.

994064637599 is a deficient number, since it is larger than the sum of its proper divisors (198443671201).

994064637599 is a wasteful number, since it uses less digits than its factorization.

994064637599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614443.

The product of its (nonzero) digits is 396809280, while the sum is 71.

The spelling of 994064637599 in words is "nine hundred ninety-four billion, sixty-four million, six hundred thirty-seven thousand, five hundred ninety-nine".