21077110630 has 8 divisors (see below), whose sum is σ = 37938799152. Its totient is φ = 8430844248.

The previous prime is 21077110619. The next prime is 21077110631. The reversal of 21077110630 is 3601177012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21077110631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053855522 + ... + 1053855541.

It is an arithmetic number, because the mean of its divisors is an integer number (4742349894).

Almost surely, 2^21077110630 is an apocalyptic number.

21077110630 is a deficient number, since it is larger than the sum of its proper divisors (16861688522).

21077110630 is a wasteful number, since it uses less digits than its factorization.

21077110630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107711070.

The product of its (nonzero) digits is 1764, while the sum is 28.

Adding to 21077110630 its reverse (3601177012), we get a palindrome (24678287642).

The spelling of 21077110630 in words is "twenty-one billion, seventy-seven million, one hundred ten thousand, six hundred thirty".