21476137706 has 16 divisors (see below), whose sum is σ = 34687284480. Its totient is φ = 9935121600.

The previous prime is 21476137699. The next prime is 21476137721. The reversal of 21476137706 is 60773167412.

It is a super-2 number, since 2×21476137706² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5350970 + ... + 5354981.

It is an arithmetic number, because the mean of its divisors is an integer number (2167955280).

Almost surely, 2^21476137706 is an apocalyptic number.

21476137706 is a deficient number, since it is larger than the sum of its proper divisors (13211146774).

21476137706 is a wasteful number, since it uses less digits than its factorization.

21476137706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10706029.

The product of its (nonzero) digits is 296352, while the sum is 44.

The spelling of 21476137706 in words is "twenty-one billion, four hundred seventy-six million, one hundred thirty-seven thousand, seven hundred six".