197728261510 has 64 divisors (see below), whose sum is σ = 391276831680. Its totient is φ = 71496276480.

The previous prime is 197728261487. The next prime is 197728261517. The reversal of 197728261510 is 15162827791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197728261517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1761529 + ... + 1870411.

It is an arithmetic number, because the mean of its divisors is an integer number (6113700495).

Almost surely, 2^197728261510 is an apocalyptic number.

197728261510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197728261510 is a deficient number, since it is larger than the sum of its proper divisors (193548570170).

197728261510 is a wasteful number, since it uses less digits than its factorization.

197728261510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109193.

The product of its (nonzero) digits is 423360, while the sum is 49.

The spelling of 197728261510 in words is "one hundred ninety-seven billion, seven hundred twenty-eight million, two hundred sixty-one thousand, five hundred ten".