21077148097 has 8 divisors (see below), whose sum is σ = 22599475200. Its totient is φ = 19586209344.

The previous prime is 21077148049. The next prime is 21077148109. The reversal of 21077148097 is 79084177012.

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

It is a cyclic number.

It is not a de Polignac number, because 21077148097 - 2¹⁵ = 21077115329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21077148497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7845697 + ... + 7848382.

It is an arithmetic number, because the mean of its divisors is an integer number (2824934400).

Almost surely, 2^21077148097 is an apocalyptic number.

It is an amenable number.

21077148097 is a deficient number, since it is larger than the sum of its proper divisors (1522327103).

21077148097 is a wasteful number, since it uses less digits than its factorization.

21077148097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15694175.

The product of its (nonzero) digits is 197568, while the sum is 46.

The spelling of 21077148097 in words is "twenty-one billion, seventy-seven million, one hundred forty-eight thousand, ninety-seven".