2909341421568 has 260 divisors, whose sum is σ = 8838410742480. Its totient is φ = 953337102336.

The previous prime is 2909341421563. The next prime is 2909341421659. The reversal of 2909341421568 is 8651241439092.

It is a happy number.

2909341421568 is a `hidden beast` number, since 2 + 9 + 0 + 9 + 3 + 414 + 215 + 6 + 8 = 666.

It is a super-2 number, since 2×2909341421568² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2909341421563) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19500471 + ... + 19649097.

Almost surely, 2^{2909341421568} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2909341421568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4419205371240).

2909341421568 is an abundant number, since it is smaller than the sum of its proper divisors (5929069320912).

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

2909341421568 is an equidigital number, since it uses as much as digits as its factorization.

2909341421568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148722 (or 148691 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 2909341421568 in words is "two trillion, nine hundred nine billion, three hundred forty-one million, four hundred twenty-one thousand, five hundred sixty-eight".