199629831408 has 120 divisors (see below), whose sum is σ = 631482261120. Its totient is φ = 54035130240.

The previous prime is 199629831367. The next prime is 199629831421. The reversal of 199629831408 is 804138926991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2188908 + ... + 2278283.

It is an arithmetic number, because the mean of its divisors is an integer number (5262352176).

Almost surely, 2^199629831408 is an apocalyptic number.

It is an amenable number.

199629831408 is an abundant number, since it is smaller than the sum of its proper divisors (431852429712).

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

199629831408 is a wasteful number, since it uses less digits than its factorization.

199629831408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4467235 (or 4467222 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 60.

The spelling of 199629831408 in words is "one hundred ninety-nine billion, six hundred twenty-nine million, eight hundred thirty-one thousand, four hundred eight".