21127505702 has 16 divisors (see below), whose sum is σ = 33201825792. Its totient is φ = 10070402760.

The previous prime is 21127505681. The next prime is 21127505719. The reversal of 21127505702 is 20750572112.

It is a congruent number.

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, 2538878 + ... + 2547185.

It is an arithmetic number, because the mean of its divisors is an integer number (2075114112).

Almost surely, 2^21127505702 is an apocalyptic number.

21127505702 is a deficient number, since it is larger than the sum of its proper divisors (12074320090).

21127505702 is a wasteful number, since it uses less digits than its factorization.

21127505702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5086163.

The product of its (nonzero) digits is 9800, while the sum is 32.

The spelling of 21127505702 in words is "twenty-one billion, one hundred twenty-seven million, five hundred five thousand, seven hundred two".