994723997144 has 32 divisors (see below), whose sum is σ = 1866608344800. Its totient is φ = 496961932800.

The previous prime is 994723997131. The next prime is 994723997161. The reversal of 994723997144 is 441799327499.

It is a congruent number.

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, 74801504 + ... + 74814800.

It is an arithmetic number, because the mean of its divisors is an integer number (58331510775).

Almost surely, 2^994723997144 is an apocalyptic number.

It is an amenable number.

994723997144 is a deficient number, since it is larger than the sum of its proper divisors (871884347656).

994723997144 is a wasteful number, since it uses less digits than its factorization.

994723997144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20123 (or 20119 counting only the distinct ones).

The product of its digits is 123451776, while the sum is 68.

The spelling of 994723997144 in words is "nine hundred ninety-four billion, seven hundred twenty-three million, nine hundred ninety-seven thousand, one hundred forty-four".