21161016462 has 16 divisors (see below), whose sum is σ = 44162121600. Its totient is φ = 6746990712.

The previous prime is 21161016403. The next prime is 21161016491. The reversal of 21161016462 is 26461016112.

It is a congruent number.

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, 76670212 + ... + 76670487.

It is an arithmetic number, because the mean of its divisors is an integer number (2760132600).

Almost surely, 2^21161016462 is an apocalyptic number.

21161016462 is an abundant number, since it is smaller than the sum of its proper divisors (23001105138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21161016462 is a wasteful number, since it uses less digits than its factorization.

21161016462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153340727.

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 21161016462 in words is "twenty-one billion, one hundred sixty-one million, sixteen thousand, four hundred sixty-two".