199155587390 has 16 divisors (see below), whose sum is σ = 361059053040. Its totient is φ = 79089124800.

The previous prime is 199155587387. The next prime is 199155587443. The reversal of 199155587390 is 93785551991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71637311 + ... + 71640090.

It is an arithmetic number, because the mean of its divisors is an integer number (22566190815).

Almost surely, 2^199155587390 is an apocalyptic number.

199155587390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199155587390 is a deficient number, since it is larger than the sum of its proper divisors (161903465650).

199155587390 is a wasteful number, since it uses less digits than its factorization.

199155587390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143277547.

The product of its (nonzero) digits is 15309000, while the sum is 62.

The spelling of 199155587390 in words is "one hundred ninety-nine billion, one hundred fifty-five million, five hundred eighty-seven thousand, three hundred ninety".