199701381915 has 96 divisors (see below), whose sum is σ = 402965222400. Its totient is φ = 89597249280.

The previous prime is 199701381907. The next prime is 199701381941. The reversal of 199701381915 is 519183107991.

199701381915 is a `hidden beast` number, since 199 + 70 + 1 + 381 + 9 + 1 + 5 = 666.

It is not a de Polignac number, because 199701381915 - 2³ = 199701381907 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11718621 + ... + 11735649.

It is an arithmetic number, because the mean of its divisors is an integer number (4197554400).

Almost surely, 2^199701381915 is an apocalyptic number.

199701381915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

199701381915 is an abundant number, since it is smaller than the sum of its proper divisors (203263840485).

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

199701381915 is a wasteful number, since it uses less digits than its factorization.

199701381915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17737 (or 17734 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 54.

The spelling of 199701381915 in words is "one hundred ninety-nine billion, seven hundred one million, three hundred eighty-one thousand, nine hundred fifteen".