101947381264 has 15 divisors (see below), whose sum is σ = 197525525743.
Its totient is φ = 50973052048.
The previous prime is 101947381247. The next prime is 101947381267. The reversal of 101947381264 is 462183749101.
The square root of 101947381264 is 319292.
It is a perfect power (a square), and thus also a powerful number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (101947381267) 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 2 ways as a sum of consecutive naturals, for example, 1237257 + ... + 1317079.
Almost surely, 2101947381264 is an apocalyptic number.
101947381264 is the 319292-nd square number.
It is an amenable number.
101947381264 is a deficient number, since it is larger than the sum of its proper divisors (95578144479).
101947381264 is an frugal number, since it uses more digits than its factorization.
101947381264 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 159654 (or 79825 counting only the distinct ones).
The product of its (nonzero) digits is 290304, while the sum is 46.
The spelling of 101947381264 in words is "one hundred one billion, nine hundred forty-seven million, three hundred eighty-one thousand, two hundred sixty-four".