1994855296247 has 24 divisors (see below), whose sum is σ = 2443867498800. Its totient is φ = 1616994973440.

The previous prime is 1994855296223. The next prime is 1994855296267. The reversal of 1994855296247 is 7426925584991.

It is not a de Polignac number, because 1994855296247 - 2⁸ = 1994855295991 is a prime.

It is a super-2 number, since 2×1994855296247² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994855296267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25481672 + ... + 25559837.

It is an arithmetic number, because the mean of its divisors is an integer number (101827812450).

Almost surely, 2^{1994855296247} is an apocalyptic number.

1994855296247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1994855296247 is a deficient number, since it is larger than the sum of its proper divisors (449012202553).

1994855296247 is a wasteful number, since it uses less digits than its factorization.

1994855296247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51041567 (or 51041556 counting only the distinct ones).

The product of its digits is 391910400, while the sum is 71.

The spelling of 1994855296247 in words is "one trillion, nine hundred ninety-four billion, eight hundred fifty-five million, two hundred ninety-six thousand, two hundred forty-seven".