21077035017 has 8 divisors (see below), whose sum is σ = 28105206624. Its totient is φ = 14050110048.

The previous prime is 21077034973. The next prime is 21077035069. The reversal of 21077035017 is 71053077012.

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

It is not a de Polignac number, because 21077035017 - 2⁷ = 21077034889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21077035417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271468 + ... + 340365.

It is an arithmetic number, because the mean of its divisors is an integer number (3513150828).

Almost surely, 2^21077035017 is an apocalyptic number.

It is an amenable number.

21077035017 is a deficient number, since it is larger than the sum of its proper divisors (7028171607).

21077035017 is a wasteful number, since it uses less digits than its factorization.

21077035017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623319.

The product of its (nonzero) digits is 10290, while the sum is 33.

The spelling of 21077035017 in words is "twenty-one billion, seventy-seven million, thirty-five thousand, seventeen".