199697143730 has 32 divisors (see below), whose sum is σ = 428666667264. Its totient is φ = 65490739776.

The previous prime is 199697143729. The next prime is 199697143759. The reversal of 199697143730 is 37341796991.

199697143730 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 199697143730.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62016137 + ... + 62019356.

It is an arithmetic number, because the mean of its divisors is an integer number (13395833352).

Almost surely, 2^199697143730 is an apocalyptic number.

199697143730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199697143730 is an abundant number, since it is smaller than the sum of its proper divisors (228969523534).

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

199697143730 is a wasteful number, since it uses less digits than its factorization.

199697143730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124035530.

The product of its (nonzero) digits is 7715736, while the sum is 59.

The spelling of 199697143730 in words is "one hundred ninety-nine billion, six hundred ninety-seven million, one hundred forty-three thousand, seven hundred thirty".