199947801284 has 48 divisors (see below), whose sum is σ = 436347856896. Its totient is φ = 77884221600.

The previous prime is 199947801223. The next prime is 199947801289. The reversal of 199947801284 is 482108749991.

It is not an unprimeable number, because it can be changed into a prime (199947801289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1343327 + ... + 1484729.

It is an arithmetic number, because the mean of its divisors is an integer number (9090580352).

Almost surely, 2^199947801284 is an apocalyptic number.

199947801284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

199947801284 is an abundant number, since it is smaller than the sum of its proper divisors (236400055612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199947801284 is a wasteful number, since it uses less digits than its factorization.

199947801284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146016 (or 146014 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 62.

The spelling of 199947801284 in words is "one hundred ninety-nine billion, nine hundred forty-seven million, eight hundred one thousand, two hundred eighty-four".