21741402002 has 16 divisors (see below), whose sum is σ = 32725754880. Its totient is φ = 10832851008.

The previous prime is 21741401963. The next prime is 21741402013. The reversal of 21741402002 is 20020414712.

21741402002 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21741402002² (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, 1501883 + ... + 1516289.

It is an arithmetic number, because the mean of its divisors is an integer number (2045359680).

Almost surely, 2^21741402002 is an apocalyptic number.

21741402002 is a deficient number, since it is larger than the sum of its proper divisors (10984352878).

21741402002 is a wasteful number, since it uses less digits than its factorization.

21741402002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16985.

The product of its (nonzero) digits is 896, while the sum is 23.

Adding to 21741402002 its reverse (20020414712), we get a palindrome (41761816714).

The spelling of 21741402002 in words is "twenty-one billion, seven hundred forty-one million, four hundred two thousand, two".