21073097634 has 16 divisors (see below), whose sum is σ = 43126339872. Its totient is φ = 6861008448.

The previous prime is 21073097629. The next prime is 21073097659. The reversal of 21073097634 is 43679037012.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 40839079 + ... + 40839594.

It is an arithmetic number, because the mean of its divisors is an integer number (2695396242).

Almost surely, 2^21073097634 is an apocalyptic number.

21073097634 is an abundant number, since it is smaller than the sum of its proper divisors (22053242238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21073097634 is a wasteful number, since it uses less digits than its factorization.

21073097634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81678721.

The product of its (nonzero) digits is 190512, while the sum is 42.

The spelling of 21073097634 in words is "twenty-one billion, seventy-three million, ninety-seven thousand, six hundred thirty-four".