426716061000021 has 18 divisors (see below), whose sum is σ = 667427685156258. Its totient is φ = 262594499076000.

The previous prime is 426716061000001. The next prime is 426716061000059. The reversal of 426716061000021 is 120000160617624.

426716061000021 is a `hidden beast` number, since 4 + 2 + 6 + 7 + 16 + 0 + 610 + 0 + 0 + 0 + 21 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 3841502000625 + 422874558999396 = 1959975^2 + 20563914^2 .

It is not a de Polignac number, because 426716061000021 - 2¹⁵ = 426716060967253 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 426716061000021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426716061000001) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 140274837730 + ... + 140274840771.

Almost surely, 2^{426716061000021} is an apocalyptic number.

It is an amenable number.

426716061000021 is a deficient number, since it is larger than the sum of its proper divisors (240711624156237).

426716061000021 is a wasteful number, since it uses less digits than its factorization.

426716061000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280549678533 (or 280549678517 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 426716061000021 in words is "four hundred twenty-six trillion, seven hundred sixteen billion, sixty-one million, twenty-one", and thus it is an aban number.