101947920459 has 64 divisors (see below), whose sum is σ = 170608508928. Its totient is φ = 52605907200.

The previous prime is 101947920397. The next prime is 101947920467. The reversal of 101947920459 is 954029749101.

It is not a de Polignac number, because 101947920459 - 2²⁰ = 101946871883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101947920359) 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 63 ways as a sum of consecutive naturals, for example, 24918004 + ... + 24922094.

It is an arithmetic number, because the mean of its divisors is an integer number (2665757952).

Almost surely, 2^101947920459 is an apocalyptic number.

101947920459 is a deficient number, since it is larger than the sum of its proper divisors (68660588469).

101947920459 is a wasteful number, since it uses less digits than its factorization.

101947920459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4808.

The product of its (nonzero) digits is 816480, while the sum is 51.

The spelling of 101947920459 in words is "one hundred one billion, nine hundred forty-seven million, nine hundred twenty thousand, four hundred fifty-nine".