21076061630 has 32 divisors (see below), whose sum is σ = 40861648800. Its totient is φ = 7780689792.

The previous prime is 21076061551. The next prime is 21076061641. The reversal of 21076061630 is 3616067012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1384601 + ... + 1399739.

It is an arithmetic number, because the mean of its divisors is an integer number (1276926525).

Almost surely, 2^21076061630 is an apocalyptic number.

21076061630 is a deficient number, since it is larger than the sum of its proper divisors (19785587170).

21076061630 is a wasteful number, since it uses less digits than its factorization.

21076061630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25868.

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 21076061630 in words is "twenty-one billion, seventy-six million, sixty-one thousand, six hundred thirty".