101920284819 has 6 divisors (see below), whose sum is σ = 147218189196. Its totient is φ = 67946856540.

The previous prime is 101920284779. The next prime is 101920284821. The reversal of 101920284819 is 918482029101.

It is not a de Polignac number, because 101920284819 - 2¹⁶ = 101920219283 is a prime.

It is a super-2 number, since 2×101920284819² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101920284839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5662238037 + ... + 5662238054.

It is an arithmetic number, because the mean of its divisors is an integer number (24536364866).

Almost surely, 2^101920284819 is an apocalyptic number.

101920284819 is a deficient number, since it is larger than the sum of its proper divisors (45297904377).

101920284819 is a wasteful number, since it uses less digits than its factorization.

101920284819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11324476097 (or 11324476094 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The spelling of 101920284819 in words is "one hundred one billion, nine hundred twenty million, two hundred eighty-four thousand, eight hundred nineteen".